What game is it? You realize, if you merge with a game you think is good, but is actually a clunker, you threaten not only your own idea, but the other one as well (also you'd have to work with people you potentially don't like...
You do realize that merging ideas is never a good thing, right? It's like having your company get bought out.
I have to agree with the merging idea being potentionally bad, but it also could possibly be a better game alogether, but I'd stay seperated in my opinion, but the choice is all together yours.