I agree to both points of views to an extent. Death on HC is an inevitability, given an infinite amount of time, even the proud Benell would die. But this does not mean that HC crumbles, even if 100% of all characters died. It just leads to a different state, you will have HC as it first started, with noobish gears and unparalleled teamwork. However I would prefer that my death is caused by my own negligence in some way. If the door is actually buggy somehow and it is not to do with the action delay (if you just multicasted and tried to run away for example) then it should be looked at. I personally have only encountered this in the very beginning of the update, but not since.
A little advise for HC players which I assume the majority knows:-
If you are in a group:-
1. Do not engage until all the members have returned to the maze - Ensures that no one joins a maze with 7 shamans or something along those lines
2. Be structured - Define who leaves last, who heals, etc; all the fundamentals.
3. Be focused - If you're on HC, you shouldn't be distracted by any means so you will react as fast as you can and should.
Solo:-
1. Keep on the black spots - simple logic, if you were aiming for drops, then groups is where you should be anyway, if you are in transit then you're in no rush. If you are however not keen on groups and would happily solo forever, then this isn't the game for you. Paul has made great efforts in merging the LS community so it is more interactive, not just on the game level but on the social level, do what the game wants!
Being on topic: Sorry for your loss but don't give up!
P.s: Another advise that will apply to very few individuals, do not get loans of any kind to buy your HC gear, ensure that they are yours. For when you lose them, you will have no ties and you can simply start over. We aren't here to make money, we're here to have fun eh.