This is just down to personal preference I guess but in a game where you "dump" a rescource. You might have a 400 damage attack like aimed shot, lets say you can spam that 4x before you have to "recharge" - After this you would have to use something less effective while you wait for your mana to regain. Then repeat. So if you visualised it as a sound wave (the dps) you could have very dense areas of damage followed by very sparse damage. Whereas granted on a cooldown version there still peaks and lows, but they are drawn out and spread through / along the timeline. 

While I understand that it might suit some players tastes, I never enjoyed builds in diablo and poe where a player ultimately has 1 aoe ability they will spam in packs and 1 single target they might spam in boss fights, or worse.. 1 button which they just hold down, pressing the occasional heal or reactionary defence. That's really what an arpg would naturally morph into if you take away cooldowns. Entire builds would develop just for the sake of 1 ability of an item, rather than crafted around the entire weapon.

As I say though, clearly a case of indiivdual preference. I've had plenty of games with this such system and seen it work (for me) therefore i'm happy with the concept. I've also tried the other and found it didn't suit my tastes.

Re not being able to change weapons and fire instantly, I think it was a smart choice because the concept of shooting ability 12-swap-12-swap-34-swap-34 is probably less "warhammer" than the concept of having to wait a few seconds after pulling a weapon out from behind your back. Although you can put perk points into making this easier if that's your wish.

We will have to disagree that cooldowns are "lazy" - To me they mean there is a constant rhythm during combat rather than spikes and falls in damage and there is therefore more focus on the action and enemies, rather than how you are executing your combos. It's two different styles of game, one of them makes your look at your character 90% of the time, the other suits looking at enemies 90% of the time. Mmo's for eg thrive on mana usage because while you are standing still for 30 seconds doing bugger all in a boss fight, you have to give a player something to entertain them.

Granted D3/PoE went for ability pools like "rage" and "mana" but this is because they wen't for ability based combat and character abilities rather than weapon abilities. But again, keeping your eyes fixed mostly on your character and how awesome your moves look. The downside to their system is in 90% of cases if not 100% you run up to a pack of enemies, press a buff button then continue to spam 1 other button until the enemy is dead. Clearly this is something that the devs wanted to move away from and didn't feel it would suit the game. This is obviously personal preference but 1 button arpg's bore me. I'd rather have 4 buttons that actually get used repeatedly even if they don't feel entirely suited to the fight.

As for guns not using cool-downs, fair enough. But neither do they use mana, rage, spirit or juice :D comparing games to real life is never a good idea because ultimately games have rules to control variables and make things more enjoyable. 

I'd return to my original statement that in weapon-loadout based games there is really only two options, something like guild wars 2 - where its basically the same as a cooldown system but using a very simple rescouce that might let you use an ability 2-3 times but ultimately having to use combos anyway, or just using weapon cooldowns so players can focus on the action :)

This is just my view on the topic. Enjoy the debate :)

Door health thing i'm not sure on, but I haven't seen any regenerate myself so I would assume it's a bug and you have some bad luck :D 

Re your comments on weapons the way I see it is this - Every weapon has some limitations right now, every weapon has something that feels slightly weak and underpowered (some more than others granted) - But it's not in the games best interest to have every weapon viable for every situation. In fact having strengths and weaknesses in a game where you carry two weapons I think is important. 

Taking the needle rifle for eg. Yes if you made the AOE on a 3 second cooldown it would make the weapon much greater. But it would also remove the need to ever use any other weapon. As it stands at the moment when I carry it I also carry a regular sniper so I can compensate for it's lack of aoe clear with the ordinary sniper rifle's aoe. That's just my view at least.

Re doors its a bug, they should open when you kill them. Then the gas goes and huzzah you get to live!

Re abilities the system you describe can work in games, no doubt. It's used by most MMO's etc and some arpgs. But on other games like guild wars etc that go for weapon based abilities its often cool down related. I think its because it gives the opportunity to have a continually fluid pace of combat with consistent peaks and lows instead of spikes of damage as a player empties their "resource" to dump dps, then boring bits while it recharges. Instead it makes a more constant and rhythmical "flow"

The best eg I can think of is taking the two sniper rifles the exitus and the standard rifle.

• The standard rifle clears trash much faster with its right click on a 1.5 second cooldown, it's "rhythmn" is therefore much faster at this clearing when it comes to taking out nurlings. This becomes part of the weapons playstyle and identity. 
• On the flip side the exitus has a 3 second cooldown for its aoe attack, which makes it slower than the above rifle and again, adds to the "character" of the weapon you are using by making it weaker at something. Basically a 1.5 second difference makes the two weapons "feel" very different. whereas if they just had different mana usages they would play exactly the same, but one would run out of mana first which really doesn't feel varied to the player.

In summary I think the cooldown model is to make each weapon have their own rhythmn and playstyle rather than allowing multiple weapons to be played the same way. I think mana spending is fine for games too, but without the cooldowns a lot of the current weapons would blur together and really be no different in play style. - That's just how i see it anyway.

You are very welcome for the feedback on your feedback and thank you for the feedback you gave on my feedback for your feedback. 

1 - Agree with 

2 - Think a slight delay to taking damage (+1-2 second) is fine. They are easy to see tbh when you see the doors close.
3 - Yup some heat weapons need a tweak

4 - I'm hopeful that in the tech tree part we can (as we level) lower timers slightly. Personally I like them tho, keeps the game focused on grinding content and not min/maxing gear by crafting 100 items.
5 - Personally I like the CD system, it makes more sense considering they are weapons and not abilities. It's pretty standard within weapon based skill systems, whereas mana is based on abilities tied to a character. Makes the weapons more unique too by having more pros and cons.

just my views. Keep up the good work soldier :D