Well two of those guys you ideally just don't want to see playing out there - Vlad and Panik, for different reasons obviously. Then Bo and Semien should have their set positions, would definitely have preferred that Semien chose 3B at his mainstay if he's not to play SS but it seems that was part of the reason he signed with us so you probably want to honour that agreement. Biggio is just a swiss army knife, he'll play wherever he's asked, so I hope he gets the bulk of PT at 3B but he should be available to move during the game and between games on a whim. Maybe there's a good lefty on the mound and you want to stack right handed hitters, if Gurriel is passable at 3B or 1B then you can play all of Grichuk, Teoscar, Gurriel, Springer and Vlad while not sacrificing too much on the defensive end.
I agree with you maybe it's overkill, but having the elite flexibility that this would allow us would present so many different lineup opportunities while still maintaining some excellent pieces on the bench along with injury insurance.