Why Ganbarou if I already have CM10.1?

Hi

Currently I have CM10.1 (Android 4.2.2) installed.
Having 4.3 (Ganbarou) installed sounds nice, but what would I gain compared to CM10.1?

Currently CM10.1 is not really smooth and I have a lot of problems with the keyboard that can be fixed by disabling lots of features like word suggestions, spelling, etc.

So basically, what would be my benefit if I flash Ganbarou?

thanks