I don’t think there is as much there as you think.
Devers is locked in to one of the 4 spots. As is Story, although as locks go, he’s not one of those ones you shoot with a gun in a commercial, if you get my drift (and arcane reference).
Romy and Hamilton are not so much part of the starting four infield spots, either. They shouldn’t be counted. (And Romy might be a DFA candidate.)
So with two “locks”, that leaves two spots for Bregman, Casas, Mayer, Grissom, and Campbell.
Casas has refused an extension. His time might be short. And the addition of Bregman might push someone into a DH role.
That leaves the prospect bunch (Grissom, Campbell, Mayer) potentially fighting for one spot, unless there are injuries or trades…