I agree completely. Both of the doctor’s sons have had episodes that were at least partially focused on them, and both actors did a great job in every episode where they were featured. They act like real kids, with real kid reactions to their situations, and while that may seem simplistic and obvious, given the level of the script writing and adult acting on this show, it’s no small feat.
That said, The Orville tends to lean on the doctor and her family a little too much. ST:TNG was great in part because it often put members of the bridge crew and/or supporting cast in situations where they had to rely on each other to escape/resolve a situation and learn/discover things about one another while doing so, and in turn it made viewers connect with and like the crew more. The Orville doesn’t do this very effectively. It’s had a couple of moments, mostly with Commander Grayson, Lt. Alara and now the new security chief Lt. Keyali, but honestly, they could shoot Seth MacFarlane’s character or the wacky pilot guy in the head and I wouldn’t miss them the following episode. Even Bortus is starting to get boring.