Going back

Pondering the move to a sailing cruiser with lots of internal space, big windows, etc.

Ive seen a Moody 45 motor-sailer which looks interesting, perhaps something as you have described.
I thought as folks got older, dealing with sails became an issue, so they buy a motorboat :)

I'm sure plenty of boaters would think your current boat is a great compromise.
Besides you currently don't have to deal with noisey, slapping halyards against the mast on windy nights and cluttered side decks with obtrusive mast stays, while berthing etc.
 
Top