Temp health talent rework

[Haxorzist]

@Haxorzist

I haven’t found the perfect solution for temp hp but here are some of my ideas:

Remove temp hp on kill (my favorite). Temp hp on crit isn’t that strong and reliable so that the replacement and hp on boss kill matter.

There are 3 lvl 20 talents only one is usually chosen suggestion:
1st temp hp melee focus, 2nd temp hp from ranged focus, 3rd temp hp crit focus.

Currently killing a skaven slave gives as much temp hp as killing a chaos warrior.
I suggest to give more temp hp the more dmg was dealt or some kind of tier list mechanic.

I also like the idea to change the lvl 20 talent to something more career specialized. This does not mean that every career would have 3 totally unique ones more like the +1 shield and 20% dodge talent and temp hp on crit will probably stay for all heroes.

*For a tier-list/dmg dealt mechanic I would give melee more than ranged.