Blakey??? Bully?? Sparklie??? I think you're all needed here....
... just the sort of thing we need really. A UK wide player register. Maybe eventually (ie, when the UK get's good at paintball again...), you could see about incorporating it into Millenium and PSP/NPPL ID cards....eventually.... maybe....
I can't see any reason why tourney organisers wouldn't accept them and enforce them, as it could be run by a body which isn't associated directly with any tourney series'.
It's not like the old days where you would expect an absolute maximum of 20 teams at an event anymore. i think that once event/series organisers start using them, the large volume of teams who want to play these events would be more than happy to fork out a tenner per player. As long as the players weren't charged a tenner every time they jumped up a grade, it would be kind of an incentive to get better (so that you could officially be a "PRO" player).
I'll stop rambling now.....
Dunc.