I gave my son a Pi1 Model B as Christmas present back in 2014. He likes to play Minecraft on it, but it never worked well or smooth enough on our 1080p TV. Would "upgrading" his computer to a Pi2 provide better framerate and not crash as often? He's fine with playing standalone, so no need to run additional server, etc.
(To be honest, I just need an excuse to buy a Pi2.)