Something in voice of Lower reputation limit for editing on SE betas.
The recent creation of many SE2.0 sites showed that each of them has its own voting dynamics and user structure, yet all of them are using same privilege limits; IMO this only makes smaller and younger sites suffer from the lack of active editors and retaggers.
So, I would propose the following system; at first, the limits would be expressed in reputation quantiles (i.e. you must have more reputation than x per cent of 200+ users) or in private beta levels, whatever is higher, and so grow with the site to finally stop when they reach SO levels. To simplify implementation, there can be also only-growing constraint and, for instance, only weekly recalc. Possibly this system should also cover only some priviledges; yet I think other post edit, retag and close voting are essential.
EDIT: I tried to improve the idea to handle the critic; it could look like this:
Note that because this site is in start-up, some limits are temporarly lowered to reflect current reputation structure ([link]you can find boring mathematical details here[/link]):
15 Vote up 15 Flag offensive 50 Leave comments† 100 Edit community wiki posts 125 Vote down (costs 1 rep) 200 Reduced advertising 250 Vote to close, reopen, or migrate your questions 500 Retag questions (temporarly lowered to 317) 1000 Show total up and down vote counts 1500 Create new tags (temporarly lowered to 425) 2000 Edit other people's posts (temporarly lowered to 710) 3000 Vote to close, reopen, or migrate any questions (temporarly lowered to 1231) 10000 Delete closed questions, access to moderation tools
Then the user will know that she/he shouldn't expect that her/his privilege is permanent if she/he just have reached the temporary limit, it all looks pretty simple (so called "I am smarter than you proof"), finally critical levels are preserved.