Everyone should skip it.
http://www.operationsports.com/news/760010/nhl-15-might-be-missing-more-than-we-anticipated-xb1ps4/
-No EASHL
-No OTP
-No NHL 94 Mode
-There are no offline seasons in HUT
-There are no tournaments in HUT
-You cannot play a friend in HUT
-No Winter Classic
-No GM Connected
-No Shootout
-No Live the Life
-No be a CHL Pro
-No be a NHL Pro
-Being drafted is now just a random assignment to a team, no way to influence when you are drafted
-You cannot draft players in Be A GM Mode
-No fantasy draft in Be A GM Mode
-No be a Legend Mode
-No Season Mode
-No Tournament Mode
-No Playoff Mode
-No Battle For The Cup
-No Creation Zone
-No Edit Team
-No Edit Player
-No Customize AI
-No Build Your AI
-No Create A Play
-No Custom Music
-No simming between shifts in Be A Pro Mode
-No Custom Cameras
-No Mobile Companion App for HUT
-No HUT Action Tracker
-You cannot create a team
-No soundtrack like previous years
You're pretty much playing a demo with all teams available.