1.) We have the right system for versatile players, but we have had offensive black holes at the 4 and the 5 for years. NBA pick and roll sets are DESIGNED for versatile players, dude.
2) You need to re-check your facts. Facts are that we have been one of the most effecient teams out of time outs. I don't have a subscription to find you the info any more. If someone does, please enlighten.
3) It is not just Jalen waiting and blowing by everyone on the court. Ollie's strength is match ups because of his NBA background. Using screens and motions to get Jalen a solid mismatch, or Shonn Miller on the block 1 on 1, or Brimah an Alleyoop off of the overplay on Adams is an EXCELLENT play. That is not just random blowby's. It's an articulated offense that these players have practiced for years to perfect. You're underselling how much of a skill good screen setting, offensive footwork, and spacing are.
4) Vance came to UConn and should have expected to play the role of a versatile role. He didn't want to play the 4. He left. Simple as that, with some Ollie negativity from Dad thrown in there, some chemistry issues and voi la. he's gone.
Ollie is not a perfect offensive mind--he is certainly not Brad Stevens. But the sets he is running are not terrible as you might suggest. He needs to use similar sets but change the STYLE if you will. The fact that you're speaking in absolutes about a very non-absolute game shows me that you probably don't know very much about the complexities of the sport. "casual fan" maybe?
I have had my team practice diagramming UConn's plays for years. They're a little different under Ollie, but they work well. Ollie's 1-2-2 box weave against a zone in particular has the chance to be very, very successful if we get the right personnel. I think you're simplifying what happens on the court too much.