I definitely feel like I got my money's worth with RotN, and this was before all of the content updates.
However.
I haven't revisited the game except to try the new characters, and that was a play test and not a play through. I haven't finished the game multiple times.
SotN remains the GOAT, and I return to it occasionally. I can pick it up from any point and have fun or spend a day playing it from scratch.
RotN isn't the top tier title that you'd expect to be supported many years later, but I respect that they've added so much and kept their word. I just wish it was content for a game I was excited about returning to. I don't even remember the gameplay gimmicks, just recipes.
If they do a sequel, despite how unlikely it is I'd very much like to see them attempt a different visual style. I wasn't a fan of any of the art styles they presented in the Backer updates, including the one that was chosen. It reminded me of when Mighty No 9 visuals were announced, although this isn't the bomb that was.
I think Hollow Knight is a decent source of inspiration when it comes to 2.5D without looking like it.