I watch the Pistons quite a bit to follow Drummond, and I really like this signing both for Boat and Detroit.
Boat will begin in the D-League, but going into the season, the only healthy Piston PGs are Reggie Jackson and Spencer Dinwiddie. Jackson is the team's unquestioned starter, but Dinwiddie has disappointed this preseason after showing some flashes last year. Dinwiddie was a second round pick last year, and was coming off an ACL tear. He played well at times, but in my opinion didn't cement in spot in the rotation.
Detroit also has Brandon Jennings (coming off an achilles injury, still unclear when he'll return) and 35 year old Steve Blake (who's missed most of the pre-season with a concussion issue).
Point being, Boatright may have a chance to see some NBA time early in the season with a Pistons injury or more Dinwiddie struggles. Stan Van Gundy is also an ideal landing spot for point guards, as his system is designed around the spread pick-and-roll, something Boat could excel in with his quickness, passing, and shooting ability.
Seeing Boatright running the pick and roll with Drummond would be awesome. There have been quite a few UConn players on the Pistons over the years.