I'm not sure how a horns set would work with Smith and Monroe up top. Where the hell would Drummond be? In the corner waiting for a screen to the basket, by Knight?

So, to sum this up, the Pistons' offense will largely be pinch post and horns. Both are sets Frank used during his tenure. It makes his firing look silly in retrospect. You can't blame the coach when:
There's no traditional point guard
There's a lack of outside shooting
Smith and Knight are shaky in transition, suck in the P&R...man, Detroit's options are LIMITED offensively.
I would love to see a traditional P&R offense, given all the athleticism... but it just won't happen with Knight.
Detroit will average 15-20 turnovers per game next season. I feel it.
I expect this squad to play some ugly basketball next season. A ton of shots around the basket, offensive rebounds and the like.
Defensively?
Smith and Drummond starting covers a lot of their weaknesses last season. They can switch/hedge P&R's, allowing Knight to have some backup in those situations. Smith shuts down isolation plays no matter who has the ball. I expect Detroit to win the board war on most nights compared to last season.
Games will be low scoring, first to 90 points win type of games.