Always looking for new ideas for my community, as well. We offer:
- Ad-free browsing
- Blog
- Livestream embed
- Special user banner
- Embedded media in signature
- Bypass flood check
- Create conversation groups/auto-replies/prefixes
- 10x bigger avatar file size
- 5x bigger inbox
- 4x more conversation participants
- 10x more time to edit conversations
- 2x bigger sig parameters/images/urls/etc.
See:
http://stratics.com/community/pages/pro/
Want to add more, but not sure what else I can offer...