lol... I hate to say this, but if there is one thing you can depend on with Japanese companies in the present day, it is for them to get on a trend late and screw up massively. The exceptions are few and far in between. I never said that it was a good idea, but the fact is that the battle system would probably make a good transition to mobile platforms. They already did a test of concept with the Hot Dogger Edition of Heart, which was essentially a battle game. If they'd done it four years ago, they probably could have scored a profit, but the competition is just too high nowadays.
Moreover, Giga keeps forcing its programmers to try out every new gimmick that makes its way onto the VN and VN hybrid scene... and mostly they screw up. Like most programmers who went into VNs, they can do one thing really well and can't do anything else right without a lot of patches.