I'd cool the jets a bit here. Remember Brandon Wood--grad transfer to MSU after a career as a star in, wait for it, the Horizon League, some telltale warning signs (mediocre when playing against good teams, as was Alstark), got to MSU and was fine (MAAR level stats from last year) but certainly not an All Big Ten level player or anything other than a complimentary guy. That happens in the vast majority of cases where kids transfer for a fifth year from a lower level to a much higher level. There are certainly exceptions--Damion Lee at Louisville in '15-'16 after transferring from Drexel is one--but they are the exceptions, not the rule. Competition level matters--if it doesn't, Eli Brooks is a surefire All Big Ten guy, right? And so was Duncan Robinson.
I'd be very happy with Alstark--I think he'd help us, and depending on how others progress, could help us a lot. That said, I wouldn't expect him to come in and be a star simply because he was one at Wright State, or simply because you can pick out a highlight film showing all of his plus plays with none of his minus ones. You're suggesting that a guy who played 7 games against kenpom top 100 teams over the last 2 seasons, with an average offensive rating of just under 86 in those games (100 is average) is suddenly going to become a superstar just because there are other good players playing alongside him? Maybe, and if we get him, I'd be thrilled if that occurs. However, it's not consistent with what has happened in the past for most similar players.