No if Tom did that would be lame. Maybe have them driven out of their lands and tom can make like a little island for them to be driven back to but to make it impossible to destroy them would make the whole game just dumb. Everything realm, and people and Zuma should be able to be conquered. Can he make it extremely hard yes but not impossible but we will never know until a Bloc of realms gather the courage to try a war with the Zuma and hey if all those realms get destroyed just would open new space to place new realms and we can have fun with that.
You obviously don't know Tom. And haven't played on Beluaterra enough.
