Segura's in a little post-injury slump, that's also how Hernandez passed him.
Seems like there's no rush on Pivetta. But if they were to give him VV's spot in the rotation I think VV would go to Allentown not the pen. This is what having a young, deep rotation is all about really. Last year they could afford pitch through it because the front office wasn't really expecting a winner.
I would only do the Pivetta to the bullpen thing if it looks like a severe need. So far, it's not, as much as we complain (and this next stretch will test it again).