I think McG is going to his main time at 3b. He has played the position well, has a good arm.
Against a tough RHP, Javy sits, McG goes to short, Keith to 3rd, or they sit Tork and Keith goes to 1st. Colt is pretty much the only other guy on the team now who plays 1st at all. Or they sit Tork and and Javy and go with Colt, , Gleyber, McK, McG,
And everybody rotates through DH.
With Vierling healthy, when they sit Parker against LHP matt probably gets those PA and Javy stays at short.