I'm worried we're going to make squeaky's head explode with all of our suggestions!
Having said that, one thing that I would love to have work is the notification center. There's a page for it, but it doesn't work. People don't always check their profiles and not everybody is good at commenting on someone's entry to let them know they've friended them. With that mix, it can sometimes be weeks before I'd realize someone had friended me. So, having the option to set up email or text message notification that someone has friended your journal (or uploaded a new userpic, or has invited you to a community, etc.) would be really awesome.
There does seem to be a place for this function, but the function just doesn't work. Can we get it working and if so, how can I help getting it to work?