GSF can be brutal for sure, from premade teams to Sd-ers.. ie: you can't win, please or placate em all.
On a completely different track, a couple things I've always wondered if were feasible.
One deals with the concept of moving space debris, asteroids and such, with damage effects particularly in TDM.
The other would be the concept of a Destroy the base/capital ship type map & objectives within a time frame,
either with the players vs an Ai or teams vs opponents bases/defense structures.
In the past there were times when a team would attempt to destroy the opponents spawn ships, even if just for fun.
Beyond that of course we'd all probably like to see availability of older cartel or new type ships and a cosmetic sale from time to time.