I think that a game where player can train all skills and a game where player can train one skill and needs alts to train others - it's two very different games with different char training strategies. And with different sets of fans. So, some players will leave this game when it happens.

Perspective to train even one alt with at least 1 combat class at higher possible level and *all* craft skils leveled to 60 (to get cross class skills) and then one skill leveled to 100... It looks stupid - you will need to repeat 8 times leveling that gives you NOTHING (your main char already has all these possibilities) and only after it will become able to get something new. Bad perspective. Try to admire what will be needed to train alts for all craft classes. Pfff. I think, such game will be dropped.