I voted for B-ABS, but you should really work on the CP beta. Your ABS already functions and is useable, and you have been working on it for a while. I'd say finish a solid beta of your game, then focus your attention on the ABS. Because once you release 2.0, the updates will never stop

.
On one hand, B-ABS is the main draw of outside attention.
On the other, if you update it first, you may not get a chance to finish the beta for quite a while.
Right now, since you haven't done too much with B-ABS and there isn't much attention focused on it, it is prime time to develop your game without anybody missing your attention. If you update the ABS then try and finish the beta, you will be swamped with glitches and questions.
So, I'd like the ABS more, but you should probably do the beta first anyways.
Best of luck with both projects:-*