Here are a few thing that i would like to see, and why.
1. Create Super Group Alliances with chat. Since we are limited to 80, it would be nice to keep in contact with other friends outside the SG.
2. Allow Super Group costume and name to be changed after creation. Change is necessary sometimes as people come and go, and power changes hands.
3. Auto-Demote leader if inactive for 30 days. Since it was already stated that a character wouldnt be auto kicked from an sg, at least let the next officer with the most time in/ most activity be promoted to the position so things can get done.
4. A "Trouble Alert" type function that can be activated by an officer to let other members know that an event/ingame meeting is needed. Like if your hunting the Huge Monsters and actually found one. Something like a flashing "ALERT" near the target window would work great.
5. This may be the wrong area for this sugestion but some SG only missions would be interesting. Something along the lines of the above Alert system gets triggered with a mission from City Hall. The missions should be completeable by numerous groups of any size (and hero makeup) but only members of the SG can participate.
That's all I have for the moment. I'm sure some of these ideas have been propused already, just wanted to toss my vote in for them.