You can see that with the F2P version...if you just want to play the game for the campaign...you can. Mousing over the greyed-out features shows they're not totally disabled - they're still usable.
honestly guys even with all the F2P "restrictions"(which really, they're more like debuffs), you can still complete the game from beginning to end, you can still play flashpoints...it's a complete game honestly.
The problem is... I couldn't get all my abilities on the action bar and my character is only 30.