-Not a bad idea, they do build up as you go on not using them right?
-Mastering each skill, I don't have that patience at all
-What method do you think for a console player is best?
-Not a pc gamer
-Huh? The stones build up? Or the skills build up? AFAIK all the stones do is make your skills increase faster, and that each of the 13 different stones affects a different set of 6 skills.
-Jack of all trades doesn't necessarily mean mastering all skills. That said I think it's pretty likely that you won't even reach level 50 if you only focus on a small set of skills.
-Not sure what you're asking here either... Going to level 50 vs 70? I don't know what you're asking, or why it makes a difference if you're on console.
-Then be happy with the game as it is. Not trying to sound like an "elitist," but you're playing on a one-size-fits-all device - you get one-size-fits-all games.