I think you may be just a tad harsh. If I had such franchises such as Super Mario, Donkey Kong, Metroid, etc I would probably push them as far as they could go. People have been wanting a Mario vs/& Sonic game for quite sometime so, if done right, it has the potential to be a fantastic game.
I'm not trashing your opinion though. It's more than valid and I know that there are plenty of people that would agree with you.