I think if controls are flythrough in the beginning maybe the moving player should have been just left out or taken out. Which at one point it does disappear when you possess someone I think? I guess you figured you should convey the difference somehow, so I guess I'm not sure. Maybe the player didn't look clearly enough like a will o' the wisp might be what it is? After a while playing though, for some reason I didn't seem to mind it as much anymore.
However this whole thing looked pretty ambitious. Aside from these minor sorts of details like the above, I actually found this kind of fun overall! I liked being able to control so many different things, even a cat - and that who you were possessing before you talked to someone seemed to even matter in the game for the matchmaking - really nice job on this!