It's true that Maryland is one of the most gerrymandered states in the country, but it only costs the GOP one seat vs. a fair map. Meanwhile Republicans seem to turn a blind eye to the countless potential Democratic seats that are lost to gerrymandering in OH, TX, et cetera. This would be a good move to take on nationwide, but in just one state it's pointless unilateral disarmament, assuming the legislature will even heed the commission's desires.
I doubt Larry Hogan is in any position to do this.