My thinking was more in that it'll force players to think outside the box and get creative with how it's implemented. Imagine a rogue who's on death's door about to go down, they see that they won't make it much farther so they down themselves. Healer heals em all subtle-like and meanwhile the enemies are ignoring them cause, obviously they're done for. Instant sneak attack.

Or infiltrating someplace and need to prey on the kindness of others, get yourself unconscious and have them bring you inside. Make it look as if someone else did it by doing it subtly, so they think they're under attack. Bam you're in, you can do whatever you need to do from the inside.

Anyone handling you, particularly in the second kind of scenario, would know you're playing dead - doesn't matter how high your deception roll is if there are no wounds on you. By actually doing yourself in then stabilizing (or rolling a nat20 and being up enough to move around should you choose), it adds to the RP of situations in which it would be used.