They way I read it he wasn't proposing infinite quests to change "your" location but doing away with individual locations completely, i.e. every time you wanted a wand you'd have to do the quest and be sent to a different location, so it would sometimes be easy, sometimes hard.

Of course this does mean that a determined A-P would eventually get barrier at 35 but it would be an extremely scarce resource for him and not something he could use for most fights like if he lucked out under the current system. And it would also mean that heroes wouldn't get stranded without barrier and turn into punching bags.