False starts--I blame the frequency of these on CP line of scrimmage shenanigans. Snap the ball already. I don't think every play requires a check off or hard count, and the hard count is just as likely to make your own guy flinch as it is to draw the D offsides.
Screens and dumps--I'm in agreement
Slants--the Bengals finally broke these out against the Chiefs, threw a few to Chad, including the game winner. They underutilized these as well and would have gone nicely with the ball control style of offense. I agree there.