or... 8v8 or 10v10 or 20v20 or 100v100...
I am sure there is an issue with a limit on the maximum number of ships the game can keep track off, not to mention... freaking lag... and trying to render all that shizznits... hell, a 5v5 with all 10 fleets duking it out in the same system is barely playable (on my pathetic computer)...
however... it will have been about 2 years... computer power would have about doubled... so doubling the max players... might be ok.