Maybe then 1 VS 1 like a turn based strategy game.
It won't drag on that way, especially if there was a time limit each turn.
That's what I meant, 1 vs 1.
As for time limit, yeah you could do that, but even then the fights could drag on for a while, keep in mind you can rescue your forces from the frontline. If you impose a limit to that too though, it could limit the time it takes to gain a victory.
But even then, just wiping out a force or making your way to the other's base could still take a long time to accomplish, some of the original Valkyria Chronicles battles could take upto a hour to complete.
Although as I said, I expect them to put a multiplayer in if Valkyria Chronicles 3 does happen, I just happen to think a lot of matches might take quite sometime to complete unless they put a lot of restrictions in place from the original's gameplay.