Or heck, what about the son Liberty and JT gave up for adoption? Surely that kid is now high school age? A little convoluted of an explanation would be needed, but I would be here for it. I think it could be an interesting story arc to have an adopted kid wanting to learn about his biological parentage and the circumstances of why he was put up for adoption, and they can hit us with the built up bang of who his biological parents really are.
I've been revisiting the seasons focusing on the original set again for the first time in years (I really can't deal with too much beyond like season 7, I never found much of successive sets that compelling). I was already on the verge of graduating high school and going to college when TNG first premiered, so I always viewed the show with slightly "mature" eyes.
Anyway, I think Sean is still my favourite character. I just think he's possibly the only one of the original group that seemed to have a real character arc and grow as time went on. Even though I liked both of his main romantic relationships (Emma and Ellie) for different reasons, I do think he and Emma are soulmates and I'm still very bitter they had Emma and Spinner randomly get married and still kept that narrative that they were still married when Emma appeared on New Class. I kind of hope this reboot fixes that and it's said she and Sean later found one another, but it probably will not happen. 😁
I think Sean was the only one who had his own theme music tool (though this was also often used for Sean and Emma's scenes as well). Like the below, which still touches my heart as they reference their first pic together from season 1.