Right, or the infinites in the new MK. But the developer is trying to do their best to patch those out as they're discovered.Yeah, in general if you're going to play - you might as well play to win. It's why there are usually competitive/ranked vs. casual modes in most games. If you want to play around (nothing wrong with that - I do it), just stick to the casual modes.
I'd say the only exception would be if there's a full on unintended exploit in the game...a la the old Guile invisible throw/handcuff/blackout or something similar.