I wouldn't mind seeing kids in the show again, if the same format were to happen in future. Most of us were even rooting for them!
IIRC, the main problem with TAR8 was the lack of international travel, which I don't mind because I don't live in the US.
For my personal preferences though, there were too many NEL's towards the end of the race (which TAR is no longer overdoing), and there were so many linear legs from what I noticed. The Gaghans got lost on Leg 2, and they were never able to get to the top of the pack until the leg with the flight.
I don't remember when, but I voted for "Yes, but a different format to the 8th season." If a lot of people didn't like TAR8's format, why bother make another one? We'd just lose viewers.
TAR has been creating themed seasons lately. Some might like them, some might not, but what matters at the end of the day is TAR still having enough fans to watch the show.
I hope TAR will still live longer than I am expecting it to.