Again though, your talking about one instance from one demo. If this movies quality aint up to par, they are gonna compare just like we do in 5 years or so. ROTJ was my favorite SW movie as a kid, but when I was a teen that changed quickly to ESB. We don't carry the same preference as we age. Things change quick. Kids obviously accept much more then adults, but they cant bank on just impressing a 5 year old. They have to hit all demos since this is a franchise that will appeal to 20-50 year olds instantly based on name alone. And that's a huge section of movie goers.
The appeal to children is gonna be their regardless, but I do question how much of that very younger demo will be male this go around. While the teen to adults will just care on the quality, it seems clear the new merch and toyline will make sure to include the older members cause they know younger kids like to roleplay. I think they will start releasing the older members in cartoons as well too. And while that will be awesome, it will play into what you were talking about. With kids questioning why their favorite characters in a new cartoon are not present in the films.
I don't know, I keep thinking about this alot and aside from my personal preference I just think that the franchise and merch would be in a better place if it followed continuity with a new cast say like Jurassic World.