He's a real solid player. Kind of a Jarrett Allen type and is still improving.
I think what SA is thinking is that if they don't get an acceptable offer and get Wemby, they can build an even better version of the Allen/Mobley situation over in CLE. If a team is willing to give them what they want for Poeltl, then they can play Wemby at the 5 and look to get a PG and a wing.
Poeltl's production is easier to find in the draft and FA than the same level wing production. Probably what SA is thinking by fishing for trades.
If you are a good team - 2 firsts for Poeltl is totally reasonable. I don’t think you are likely to get as good of a player with 2 picks in the 20s. If you are a team that might wind up in the lottery - 2 picks is a lot. But I don’t really see a good match for him besides Toronto - which should be a good team, but is not.