Nice. There's some interesting things on the horizon, and I think RVs will end up benefitting.
I don't have a Class B currently, but have in mind to pick up a Travato 59GL in a few years. The lithium system will work great for my needs - often times dry camping in warm climates when I go to paramotor fly-in events. I don't want to have to drag a generator around with me, and the onboard Onan generators, IMHO are a joke these days (80dB at the exhaust pipe? Why haven't RV companies come up with a quiet inverter generator that is more efficient??).
Eventually, I think all motorhome RVs and likely a lot of trailer types will have lithium battery systems and underhood generators to be self sufficient for extended periods of time. The next decade or two will be really interesting!