I'm a small minority market, but I'd love an electric replacement for my 30hp diesel small compact utility tractor.

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 :-(