The 7451 add-on pack would make a great addition to this set.
Having sliced with the cutter and broken up the old road surface with the pneumatic drill, you'd have the pneumatic hammer operator to tamp down the new tarmac, and still have a man left over to lean on his shovel.
@Playmobil, isn't it time these operators of heavy machinery had a hard hat with built in ear defenders? You can only get away with wearing a baseball cap on a building site for so long.