User Group Feature list
 

Where can I get an easy list of what features are customizable by user groups (and not the Admin and Moderator levels)?

I want to establish multiple levels of paid subscriptions for my users, each level offering more features but I can't find an easy list organized this way.

I know I can set up private forums by user group.

But can I do things like, allow larger avatars, allow larger PM mailboxes, allow graphic signatures, allow access to RSS feed..etc..all by user groups?

I'd like to do these things without hacking the base if possible.

Thanks!