Daboll has been uninspiring and unimaginative to say the least. He's not scheming to any of the players strengths.
You know who'd be a decent OC with this collection of players? Greg Roman. Yeah that's right! I said it!
His skill set designing run plays with Gore (Power), Singletary (Elusive), Yeldon (Pass Catching) and a sprinkle of McKenzie (Speed) would be pretty good, IMO of course.