Opinions on the changes?
Personally I am not surprised they made a map change - It was needed. I am also not surprised that instead of removing the maps people actually complain about (Mirage, Inferno or D2) Valve just defaulted to the one thats the least played, Train. Ancient is alright but the fast rotations from mid to B are really aids to play against as the map is so big.
CSGO 360 - I don't like that they have put a subscription service in the game just to give you stats. I guess Valve feel as though they are entitled to an income from the game since it went f2p and their cut from the Marketplace obviously isn't good enough.