USB? -48v? And there's a whole ecosystem of 12v stuff under the RV umbrella. Seems like what's lacking isn't a standard (or rather the basis for a standard),

USB? -48v? And there's a whole ecosystem of 12v stuff under the RV umbrella. Seems like what's lacking isn't a standard (or rather the basis for a standard), but a market leader to say "we're gonna back this". But you've got way more insight than I do and I'm undoubtedly underestimating the effort.