Line Chemistry would be nice, also fix the potential of players coming out of the draft. I hate drafting a player with a potential of C-C-B, etc.
Also make the prospects more believable, its embarrsing drafting Kurt Clarke out of North Korea!
They should probably bump up the overalls of the top prospects in the draft. Especially the further you get into GM Mode, the projected first overall pick is always like 66 overall when drafted. Sure, he usually has great potential, but it always takes 4 to 5 years for him to be ready, (if he isn't a bust) which doesn't seem realistic to me. Over the last few years, many top 5 picks have played in the NHL right out of the gate. In this game, unless you edit rookies for the first couple years, no draft picks make NHL rosters for a long time.
Proof:
2011: 3/5 (Nugent-Hopkins, Landeskog, Larsson)
2010: 2/5 (Hall, Seguin, and Skinner was 7th overall)
2009: 3/5 (Hedman, Duchene, Kane)
2008: 4/5 (Stamkos, Doughty, Bogosian, Schenn)