LWF is where Giovinco is best anyway. Could go with a Gio-Bendter/Matri-Isla trident. Depends on Isla's fitness levels though. But we can't totally reshuffle shit now when there are so many players on the field that deserve a yank.
You need the right set of players to play the 3-5-2. Forcing players into positions just to be able to field a certain formation is treading water. Asamoah just isn't a flank player.