Have you discovered the joys of the fake tree yet? I think that was one of the special hero buildings you get from one of the heroes. Can't remember which one though.
Anyway, epic artistic base is epic and artistic. Sordes towers are funny, they look badass but shoot mini pterodactyles with bombs at you that just go 'op' instead of making ginormous explosion. I would have surrounded the base of the smoke towers with either traps or baricades, so that the infantry can't run up to it.