I like the idea of having a lot of guys competing for a couple of positions. Competition will allow the creme to rise to the top, and I feel the new regime is going to make wiser decisions when it comes to final cutdown.
Personally, I think that the only one that is safe is Lee Evans. RP will make the roster because of his PR/KR ability, not necessarily because of his WR skills. JR is a great blocker and I think that he may have salvaged himself with his performance last year and he was JP's favorite WR, but this doesn't neccesarily mean that he is going to make the team. PP may be expendable and if he isn't lights out in camp, I think that he gets cut and his career is over with, regardless of signing bonus.
I wouldn't be surprised at all if Nance makes the final roster considering how well he has performed so far, the match up problems he can create in the RZ, and the fact that his size could be a commodity to this WR corps and may aid in JP's development. He is, however, going to have to be lights out considering he is an Undrafted FA.