I think when the Ukrainians hit them in the east and southeast, it will be over pretty quickly, quicker than they could throw a bridge across the Dnipro, except for a NATO pontoon one they have stashed nearby or suddenly on its way from Poland. It would be good to interdict those troops and keep them from getting back into Crimea, maybe HIMARS a bridge or two. I'm pretty sure Vlad has Crimea stripped bare of troops and I can't see troops idle there when he is desperate for them where they count. They had contractors build defensive works and trenches, but they are largely unmanned.