i am impressed by your industrious feedback!
i did not have the will to put that much effort into it.

invisibility right now is undetectability (greater invisibility would be busted) when it should be as helpful as standing in a heavily obscured area, which is pretty much half of the game.
the same could be said about the blinded condition.
invisibility also seems to break when damaged.

heavy obscurement is also really weird because sight based feature such as opportunity attacks or spells work just fine
but as soon as you "hide" it is impossible to find you without darkvision. and even then you just have to roll stealth.

since prone targets automatically fail dex saves the unconcious condition seems to "work" fine