That's exactly what I am talking about! If I get a new Unity I am going all in on this upgrade right away. One thing I learned is that you should start making the changes you want right away even on a brand new coach.
That's how I feel. I started tearing out things and drilling holes through the roof on my coach almost immediately upon delivery. My wife thinks I bought just for upgrading, not for travel, which is only slightly untrue.
Most of my upgrades were based on experience though. It wouldn't have occured to me to upgrade my fridge until I found out how bad the factory one was. Never having RV'd before that was a surprise.
Same thing with every project. Very first one was to install a bidet seat, after we discovered single ply tissue dissolves in your hands at the worst possible time.
I'm on the fence about replacing the generator with a bank of Lithium batteries though. I'm too lazy to do the math, but if you add up the potential energy of a full tank of propane running the generator its massive, more than any battery bank in the same space would hold. I like having all that for "backup" the way I camp (which is random and irregular, and often with no hookups, and we move a lot).
No doubt as the technology improves through my thoughts on that may change.