I honestly don't like your idea. BUT I like how you can eat the bat and I like the idea of a new use for these useless mobs. I think bats should AT LEAST drop some xp, but the idea of sacrificing the bat for 30 levels is ridiculous. It's just a bat. There are plenty of bats and you are more that likely to catch quite a few. I also didn't like the idea of the Batcatcher. I think it would be more efficient for the bat to drop loot. Either meat, or something (maybe) critical or not to the gameplay. But to be honest, it's difficult to put a good, genuine use to a bat. Good job on the ideas.