If you are finally able to login to brainstorm you go to TMO (here in forums) first.
Create a thread with your proposal in the Brainstorm section. Go to Brainstorm and create a new one and link to the forum's thread you just created. Then copy the link from Brainstorm to your thread in TMO. Done.
Sounds a lot of work but really isn't.

For your proposal: please try to give an as general as possible explanation what the problem is you want to be solved. Direct app porting requests don't need a brainstorm.

Feel free to follow the links in my signature for further explanation.
Once you understood the current processing it is easy. For some reason no one works on improvements for Brainstorm at the moment and the list is long already.

Welcome to maemo.org!

PS yes the logins aren't linked, that's another issue being discussed for a long time now.