you could also make it 3 vs 3 with a mod to make all sides the same nation then play on a bit larger map with pre set strt locations then there would be more options too loose a war here, win one there and get further in the game before it's gone, play with faster research too 

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				Want a blend of 
fantasy and 
sci-fi? Try the total conversion 
 Dominions 3000  mod  with a new and fully modded solar system map.
Dragons wanted? Try the 
Dragons, Magic Incarnate nation.
New and different undead nation? Try 
Souls of Shiar. Including new powerfull holy magic.
In for a whole new sort of game? Then try my scenario map 
 Gang Wars.