I think Randle can be a good player, no doubt, but his ceiling isn't too high, imo.
Embiid at full strength is gonna wreck the league. I don't who will be able to stop him considering he's nowhere close to his prime.
I don't know if the C's would make that move, though. Ainge seems to take a liking to developing a young core, and he'd have to trade some pieces away for Boogie. It would be a + for the Pelicans, since they could use players like that, but it's just tough to see that happening right now.