This was the format of our drivetrain in logomotion (though we did not use this kit
) It was by far the best drivetrain we have made, and it was arguably better than most 6wd robots without omni's. We DID NOT drop the center due to the fact that omnis have a slightly smaller diameter. You definitely should power all wheels in this case, even without a drop it is necessary. I do not think that It would be possible with a kit Cbase, as the center wheel is dropped. Just my 2 cents