You mean just waiting till all competition has died? Would be a little too long for my taste :-). I hope that with progress of AROS at least some people of the community will be persuaded to use it. And then there are much more people outside...
I personally don't think Hyperion will last more than another couple of years at most, but I'm only guessing.
AROS and MorphOS teams already cooperate and I can't see why that should stop anytime soon.