Looks amazing dude!!
My 2 cents: (means NOTHING, just reflects my own style)
My overall thinking is take out anything you don’t need and make it extremely custom-ICRPG friendly.
Death rolls, dog pile, battle fury, spell burn
Don’t think these are needed at all. When they occur during a game, I won’t be going in my character sheet every time I roll a death dice to update it, y’know?
Instead I’d rather have a couple of blank text and number boxes where Death Rolls/Hero Coin is, where I can put whatever I need (eg. Surge capsules, Custom Paladin Holy points, Death Rolls because we ended mid-encounter and I need to remember for next session, etc).
Traits, Tags, Spells
Rather then separate boxes, I think it would be more streamline and homebrew-friendly to simply have another list, like the items one, for Tags/Traits/Spells (Tags and Traits are the same thing essentially). I’d prefer longer boxes, like the item ones, to write the mechanic as well.
I’d want it directly after items, and for it to be collapsable. Players can use it for whichever they need (maybe even 2 lists separately collapsable, so players could choose to separate spells from tags or whatever).
Cut the fat
I would scrap the “other possessions” box. Since we have 20 items cap. If there is a need for extra items, I would just write them in notes.