I don't think positional should go away entirely, but I think they should be downplayed more. Keep it on the finishers (Chaos Thrust, Snap Punch, Aeolian Edge, etc) but remove it from the rest. There are just too many situations where you can't reliably hit everything, even with the now shorter CD on True North (and solo you'll NEVER hit most of them.)

I also think they should disable positionals while solo.

Additionally I should bring up Eureka and Deep Dungeon. For whatever design reason they thought it was ok for none of these mobs to require positionals. Why is that?
Because those are designed around not requiring a tank, and therefor not having guaranteed aggro control.