So, if I'm undstanding this, while making death saving throws, the player can every themselves by taking levels of exhaustion. 1 level for Bonus action or reactions, 3 levels for actions. They can move half their movement speed (while staying prone?), as well as talk, without taking additional levels.
Additionally, you're reworking the exhaustion rules to be -1 to all ability checks and saves per level of exhaustion, up to 10 where the PC dies.
Then the first short rest improves exhaustion by y one level, then they have to use long rests, which improve 2 levels each.
Sound right? I think this sound a pretty decent
I mean, it did come out 8 years ago. It's next Gen vs when I launched at least.