I am fine with switching from Commonwealth to Russia. Let us play with these new toys.
That would only work if "The Springboks" (Yellow) would switch over at the same time, since otherwise engagements between Russians and Western Allies (US, Commonwealth) is not possible.
Also, we would have to scrap the Airborne corps since CMRT does not include them (yet, probably .. they will be ours again for a small fee in probably one years time).