[AdamHeard]

The Engagement of the drivechain is pretty low on the module near the gearbox, I'd be worried about that slipping.

Also, the outward flanges will make dealing with bumpers difficult, and are somewhat exposed and vulnerable. Try flipping them to the inside.

The pocketing is not symetrical, which bothers me, but clearly isn't a functional issue.

If your electronics hump attached to the siderails of the chassis, it would greatly increase the strength and rigidity.

Do you already have a sheetmetal sponsor lined up and good to go, that's key to this design obviously.

Can you post just the module? Curious to see how it's changed.