There's an e-axle repair kit from Germany.[1] This kit is for a Schaeffler e-axle, and contains all the bearings and seals. If you have to take the axle apart to replace any of those, you may as well replace all of them.

Third party E-axles are mostly for trucks, where power trains and truck bodies come from different manufacturers. Heavy trucks can be maintained for decades, and that market wants repair parts available. For a car, the powertrain bearings tend to outlast the useful life of most cars.

[1] https://www.repxpert.com/en/eaxle

I guess a repair could mean swap it out, and the unit would get sent back to get refurbished, like what's commonly done with say alternators.

It isn’t inherently more difficult to make it more or less repairable.

Repair ability is a design attribute that is planned for.