As far as a tutorial system goes. There was one part of the mentor system I believe they should bring back from FFXI. The question mark next to your name when you start. This helps define who the new players are. I know some of my friends and I would look out for people like this and help them understand the game better whenever we got the chance.

Though it has little to do with teaching players how to play I'd also like true starter equipment rather than simply weathered versions of equipment.