So before the hate train arrives I'll just add my 2 gil.

If the game makes leveling as easy as it was in 1.0, and beyond with only quest grinding being the viable way to level I'll be for one interested to see if they can pull it off and two if they can keep it interesting beyond your first job to 50.

Personally if I had a choice I'd pick party focused play any day of the week with a twinge of fringe power for those who want to solo all-beit slower.