Faster loading time for CFW, for starters. And there are some features you can get through it you can't with A9LH. For once, you can dump your OTP record without having to downgrade to 2.1. Not that you need it anymore, but still. Not only that, but it should allow, in the future if developers work on it, a completely custom OS that is completely different, instead of a CFW like Luma. Might be able to get a fully working Android on there, since B9S allows for loading a complete firm on the SD.