From the way the Maw was described it sounded kinda like an even more hostile Timeless isle with no weekly or dailies or world quests of any kind. (Though i still think quests from other zones will ask you to find stuff from there)
It has not really been done before, so it will certainly be interesting to see how it works out when you actually aply it. It will either be boring and you rarely end up going there outside Torghast runs and Legendary crafting, or it will be amazing and feel amazing all the way to 9.2.