Winnebago investing heavily in Electric powertrains

Given that motorhomes already have generators, and a battery pack, would it not be relatively simple to enhance both of those systems to provide an on demand source supplemental power on hills or merging into traffic?
Some transmissions have a provision for a PTO shaft. Maybe it would be possible to hook up an electric motor to the shaft and add power to the drive train through it.
A robust generator (10k watts?) and a substantial lithium battery pack could provide a possible source of additional power as needed.
I would be interested to see if that was possible.