Earlier quoted context omitted.
I can't make great use of a full EV but would love more AWD PHEV options, of which there are currently few and they're mostly very expensive. A PHEV can be my everything-car that runs entirely on electricity for 90% of trips. I assume there's some reason they're not a more widely-supported option, but damn, I wish they were more common.
They aren't more widely supported because they are more expensive and more complicated to manufacture with a higher potential for more stuff to go wrong. Until the engine that powers a PHEV is nearly drop-in ready for a replacement (for example, going to your local auto parts store and buying a replacement like a battery) then companies need to have service technicians and production lines to support these "engines"…
PHEV isn't that much more complex than an ICE. The transaxle is typically mechanically simpler, and you have two electric motor/generators instead of an electric motor (starter) and an electric generator (alternator). There's a big battery you need to find room for, and the power wiring. And the engine control is significantly different, but if it doesn't work, swap the ECU works as well for an ICE and PHEV.