Who plays the 4 if Poythress isn't ready or tweaks something? Whos our big man if Skal is ineligible or hurt or something like that? Who's our big man next year if SKJ goes to Carolina and Ayton doesn't reclassify or Lee goes pro?
Of course those are all what-ifs, and you can't prepare for everything, nor do you want to load the roster, but since everyone here is always so worried about what Duke is doing, they added a transfer, added Jeter, added the three star kid I can't remember the name of, and will likely land Giles anyway in 2016, so I'm not too worried about us being "too crowded" if Ayton reclassifies.
Besides, you're going to be hard pressed to come up with a scenario in which I wouldn't want a 7 foot, 250 pound 4 star center in a loaded 2016 class unless grades or a criminal case were involved.