Gearbox Design for an FTC Robot

[bobowitz]

I know this isn't exactly the place for FTC discussion, but I just wanted some feedback on this "gearbox" my FTC team is using on our robot from the people who actually design gearboxes.

So in the picture, you can see three AndyMark Neverest gearmotors on the left. They're all mounted to an 1/8" aluminum plate, and each have a spur gear fixed to the shaft. The other end of the shaft is supported by a bearing in a piece of aluminum plate parallel to the first. All three motors drive another large gear, which sits on top of the assembly.

Is there anything inherently wrong with how these motors are being driven? Would there be a better/more efficient way to make this gearbox, or just any advice on improving it?

Thanks for reading.