From my POV, anyway:
The good: I will presumably get to keep driving toy tanks around, tanks that make their own pew-pew noises, saving me the trouble;
The bad: Gonna have to learn a whooooole new system of crew management, which may be even worse than the current one;
The ugly: Losing the specialty crews, paid or unpaid - Sabaton, Offspring, Christmas Ladies, Snow Maidens.
Bonus possible ugly: No more Stuffed Reindeer Girl.