I wouldn't mind doing something AU with the kiddos lol Maybe Mia is going to University and meets Brian who is a TA or professor, so slight age gap idea too lol
Movie related, Brian stuck with the FBI and didn't get fired for letting Dom go.
Mia of course goes to Brian to help her find Dom since he disappeared. (She is still pissed off at Brian so it would be a bit of a slow burn lol)