It's a natural fit. The extra weight is a positive not a negative. The tractor is already a hydrostatic transmission in order to get continuous torque across RPMs and some in this market already use an electric motor for hydraulics (powered from a generator via the engine). It's only used for short bursts of activity so doesn't need a particularly huge battery even.
But such a product doesn't exist yet :-(
Need three point hitch, loader, PTO, and industrial tires.
When you (or someone else) makes one with equivalence to about 30 or 40hp for under $30k and, I will instantly buy it.
All of those things are certainly doable, although we will be pretty much eliminating the hydraulic system, so the PTO and loader might need to be thought out a little differently.