Of course, he made the right choice to come back!
Apologies in advance for the long post.
I thought last year, Biggie could be a 3 or 4 year college player. I also thought that he lacked the athleticism to be a legit NBA player and also thought that improving your athleticism is one of the hardest things anyone can do (to clarify, you can improve strength, but it is really difficult to improve your first step and lateral quickness).
However, seeing the transformation he made this year and observing his determined attitude towards his own improvement - he's erased any and all doubts that I had last year. I'm a Biggie believer!
I believe that NBA brass will believe in his NBA future too. We're starting to see it in some mock drafts and, by season's end I think we'll see a lot more come around. I think Biggie is gone and that it is a good decision to go. I also think this can be good for Purdue in the long run. It's another selling point of how we can develop big men. It shows we have structure in place, the facilities, the strength coaches and behind the scenes staff to enable your improvement and development. You have to desire, if you put in the work and the time, you will get better at Purdue and win a LOT of games.
While Biggie still has improving to do in his first step and lateral quickness, he has undoubtedly improved in this area and there is no reason to think he won't continue to improve given his work ethic.
He has a beautiful touch and range to his jump shot and an unbelievable nose for rebounding. He uses his wide body and strength well to create space against his defender. He doesn't need to be quicker than his opponent to get a good shot (he had a couple of really nice baby hooks - with both left and right hands - in the MD game). He still struggles against elite athleticism, but I think he will get better in time at this.
I think his NBA comparison is Zach Randolph. He is not athletic by NBA standards (nor a great NBA defender, but a solid one), but is a strong and wide body who is skilled in shooting and passing. He has had a long and successful NBA career and I think Biggie could be similar.