Ehh, not sure the Peashooter would be worth it (imo, of course)... it was as slow (if not slower) than the early model zeke, and if offered even less firepower and less protection.
As for the "troop war", I think it would be great... but I really doubt the devs could produce something like that.
Check out
this thread for an idea that would at least make town capture a bit more involved and interesting.