The offense has bothered me for a long time, too. And no one will confuse me with Lavin's agent. But piss poor execution by the players has been a big reason the offense is stagnant.
I'm no basketball savant, but in this era of freedom of movement, and no hand checking etc, the pick and roll from the slot has become the de facto "pro-set". Everybody runs it, it's just a question of how well you can execute it with your personnel, and how well you can defend it.
We did a bad job in both regards this year.
Our ball handlers don't set it up, the screeners don't position themselves at 90 degree angles, we never pass to the screener on a pop or roll...it's just a mess all around. And as much as I fault the staff, I am 100% sure that Whitesell, Hines, and yes, even Lavin have worked with our guys on this in practice.
At some point the players need to play the game. If Phil Greene can't turn the corner, he shouldn't be a guard in the game. Likewise if Obekpa and Sampson can't set a proper pick ...they can only be marginally useful on offense. Even Dangelo needs to learn, his best way to avoid being trapped on every pnr is to throw it back to Sampson and have him hit a few jumpers early in the game.
This is just one example, and maybe better coaching would get through to these guys, I don't know. But the ball movement is largely a fault of the players IMHO.
Who is in the game at what times, and what plays are called coming out of timeouts and out of bounds, etc ...that's a different story.