Parallel circuits
As it is, it's somewhat of a hassle to do all the wiring when you have multiple power sources to meet your requirements. Especially with the electricity bug that makes everyone lag when the power demand is greater than the supply from a solar bank. You end up having things on different circuits when in reality you could put things in parallel / series / combination. I think it would be cool to have something like a "parallel circuit panel" that has, for instance, two inputs that you could use for solar panels OR generators. Maybe voltage converters or something like that too if you wanted to put both solar panels and generators in parallel.
Or just make something like battery banks, relays etc able to have multiple inputs.