yeah, i would like to add a comment about the statement that bases are ineffective due to the fluid nature of the front line.
sure a base will always sit in the same sector. the wormhole wont. sure stacked wormholes to your interior worlds have defensive issues if they are penetrated. heres what I like to do:
2 gateway systems (per front). one leads to your core systems, and is moderatly defended (internal gateway). the other leads to frontier systems via stacked wormhole and some heavy static defenses (external gateway). as the frontier moves, move the wormholes with it. put a conquered system behind the internal gateway once its conqured, and cut off its direct access to other systems. add a new wormhole to the defended stack at the external gateway to attach to wherever the new 'front' is.
and uh, try not to fight a war on more than 8 fronts or so from the same system, unless you are the "heir to the throne of the kindom of idiots," as Londo would say
