It's a bit of a rearranging deck chairs approach really. Gregorius is a better SS than Segura, Segura is a better 2B than Hernandez, but Kingery isn't necessarily going to be a plus 3B. And yet he still might be the best defender of them. But this isn't at all about defense really. Didi hit 27 home runs in 2018 and still had 16 last year in just 344 PAs. Segura has hit 11, 10 and 12 in his last three seasons. Kingery had 19 in 500 PAs. Didi immediately becomes our best slugging infielder really (non-1B), and possibly our best overall too if he can put it back together. Kingery needs to progress as well.
The problem is, why would Segura be any easier to trade than Hernandez was, even for value? Maybe if the Phillies picked up half his salary, or, yeah, took back something big, but they can't really afford to take on Price's salary, even if Segura was involved. You'd lose all the room you're about to gain back from Arrieta next year.
It's not gonna be boring.