A few comments:
1) As mentioned, IMO the key sell to EJ is that we have some extremely talented guards (Frazier, Ayo) and we need some equally (or better) talented players in the frontcourt to compete not only in the B1G but nationally. And in the process, we will get you to the league. That would be the key sell for ALL 3 recruits.
2) Given that we will also have 3 talented frontcourt recruits at the same time, overplaying the message of "you will be the cornerstone of our offense" would be counterproductive and fake. It would be better IMO to focus on collective impact to overall frontcourt, synergies with backcourt (see#1), style of play, ability to coexist and achieve both individual and team success, etc.
3) On the point of Leron utilization/blueprint, I also have some reservations on similarities. Leron was forced to play more C/low-post than was ideal for his development IMO. Part of the reason is that we had no other player with any kind of low post skills last year. That was not the best utilization as far as his own career development, and the end result (low level 2nd division league in Europe) show that. I have seen EJ LIddell many times and I think he is an absolue fantastic player, much deserving of the accolades. He will be a difference maker in college. But his best utilization is not like Leron last year. His best utilization would be playing along a talented C/low-post (like Oscar T or what we thought Okoro would have been) so he can play inside/outside. That would not only be different than Leron, but also to his best interest because the only reservations scouts have on Liddell (on his potential at next level) is his ability to transition more to the outside, which will be needed for him to the NBA. Leron, unfortunately due to roster limitations, did not have that luxury.