Using a five-player rotation at the 4/5 is not how I envision things. Instead, why not just draft guy who can both defend man to man and block shots?
If I am looking for a defensive big, I am after someone that can be a great at both weakside help defense and man on man defense. No doubt that Drummond's potential in that aspect of the game is off the charts but there is always that risk factor that might be too high for a top 5 pick.
The more I think about this draft there more I think we will be disappointed with the outcome in a couple of years time!
Unless of course we get to fill a need with a "slider" (eg Michael Kidd Gilchrist)