Removing the topdeck in order to take the layshaft out is not that big of a deal I think. The way the bulkheads are right now is the best solution for proper flex.
I think that the car still has cell holes in the plate is due to the fact that they are still using cells in Japan at some races. The chassis is optimised for lipo though, the car is perfectly balanced and the lipo holder works flawless. I actually like the chassis to be a little bit wider, this way your lipo won't touch the asphalt and will stay in perfect shape.
Maybe Kyosho will create a lipo only chassis, but there is not really a reason to do so.
The car can be bought from the Kyosho online shop. I think stores in HongKong will also have the new kit.
The drivetrain works flawless indeed. Very very smooth and can't see any sign of wear on the outdrives/axles. The pin that goes trough the driveshaft is also a little longer then the thickness of the axle, this reduces wear too. It's all in the details