At least Semin should have been traded, instead of just walking to Carolina. I've never been a big fan of trading Green away personally, but I know I am in the minority.
i thought semin for a defensemen should have happened in the 2010 offseason or early in the season 10-11, but i was against trading green as our defense was clearly our weakest link.
although during 2010-2011 season that proved to be wrong as carlson and alzner burst out and ovechkin forgot to hit the gym that summer.
edit: also GMGM trade flash for hannan instead