Yeah arguably Sosa still adds more value at 3B than Bohm even when he doesn't hit. But not much lately, in either area. He's also just a poor fit on this team given Bohm is righthanded and Turner is righthanded and Turner and Stott rarely sit.
The loss of Hoskins also highlights Bohm's shortcomings as he's just not replacing that level of production despite playing the traditional corner IF power positions. And unlike Hoskins he doesn't hit the more voluminous RHPs nearly as well. He could keep playing 1B (or DH) if he only faces LH starters but that is not a guy who earns his arbitration raises for much longer.
It's easier to find a 2B than a starting 3B; personally I'd consider moving Turner to 3B and Stott to SS. Sosa is a bench player or maybe another team would still be interested in seeing if he can be a useful starting or platoon SS. Even his defense at 3B hasn't been as good as is ideal.
But that is all next year stuff, unless Dombrowski gets really clever/aggressive.