I feel like a DFA for Hale is unlikely, since they guaranteed him $850K. Technically they could release him before his salary is guaranteed but that rarely seems to happen. Of course all that happened before the front office change and new signings - and in particular, the excess starting pitcher would seem to fill his long relief role - but would they really eat the $300K?
I'm assuming opt-outs won't be nearly as common, though some players still automatically get a retention bonus. I think the taxi squad players are also paid as if they are on the 40, so guys like Bethancourt, Nova and even Torreyes could pick up a little extra $ that way if the Phillies were so inclined. I don't think you're obligated to actually take them on the road all the time.