I've got some (small?) ideas for SEN:

1)
Maybe a profile-description? so you can tell about yourself, or account history, or soemthing special...
suggestion: should be able to buy @ the store... around 220 minerals

2)
Something like a friend-list? should be also be able @ the store...
so why? : maybe for friend-messages in shoutbox, or friend-PM (sends one PM to each friend, costs only 1 PM)
security: it costs some minerals to add members to friend-list...
price: around 150?

3)
Invisible topics: maybe able to cloak topics where the last post is older than X days (member can decide the day-amount of X) should be a basic Item...

4)
A new Game? maybe something like Lotto??

and just another question: will the "old" (current) forums be deleted when SC2 comes out? or will there be a over-topic for SC and one for SC2 @ each forum? (so: UMS Theorys and Ideas [SC] -and- UMS Theorys and Ideas [SC2])

1 & 2: There used to be a really extended version of profiles. It had photo galleries, friend lists, journals, etc etc etc. It was deleted awhile ago. Might resurrect portions as I see fit.
3: That's a basic feature on most boards. I shall do it (eventually). Not sure if it will be a per-forum basis or global basis or a temporary filter like basis.
4. When I have nothing else to do and/or am bored.

ok....
I would be happy for at least a description box... however

Just a question... how many webspace do you have, and how many is in use??