I'm just glad they weren't stuck with the F. It was an ugly, bloated ship. I admit, I've never been super fond of the 1701-D either, but from some angles it always looked great and they worked the daylights out of those angles the last two episodes.
I could get used to the G. It's fine.
I'm happy with the Titan as the Enterprise-G. The F looked like a bloated Voyager with Enterprise-E nacelles slapped onto it.