This is the only way you can make tanks not feel like they are getting bursted often.
So for ex:
If you burst down reins current hp
He looses his rocket Armor and becomes less bulky with that tank top look showing muscles like in his short.
He can’t use fire strike, charge or shield but he can swing his hammer and has only 250 hp like squishy.
If he rebuilds ult charge his Armor powers up again and comes and attaches to him like iron man suit.
If he gets eliminated before that he dies and respawns.
Ex : 2
For doomfist when he gets busted his gauntlet breaks and he becomes squishy doomfist at 250 hp.
He can’t block or use mobility.
But his walk speed increases to be like tracer or genji.
he can shoot with his knuckles and his other arm without gauntlet can uppercut like old dps doomfist.
His melee also does more dmg.
If he manages to gather ult charge the gauntlet comes back to him like thor hammer.
Like this you can create fun second forms for tanks and make it fun.
This is how tanks are handled in many pve games as they go through various forms.
It will be complicated to do and time consuming, but this is how you can do the role justice.
Anything else like rq, 5v5, passives tweaking numbers etc will all be bad bandaids that will only get worse overtime.
Only lazy developers will keep sticking to number tweaking on problems.
It’s time blizzard current team actually does something ambitious and pull it off and put a smile on your playerbase again.
It’s been a while.