So yes, Campaign play-ability without a GM should be a goal.
It is, it's called a multiplayer standalone campaign.
How many tabletop games run themselves without a GM? You've completely misunderstood (or ignored) Larian's target audience and goals with GM mode.
I am quite dead on to the intended audience. There is a growing audience for tools to make GMing easier than any before.
There are ones to make dungeons, to draw up random loot tables, encounters, things to keep track of players, keep track of monsters. Not to mention that the most common adventure paths by DMs are the ones that require the LEAST DM input to run... and the least popular are the ones that require the MOST.
The REASON why it should be theoretically possible for there to be no active GM input for a full game to play out is so the GM can chose where they are more active AND to put less stress on in game ad-hoc.
I am not saying "It should be automated so the GM doesn't have to do anything" I am saying "It should be possible to automate everything, so the GM doesn't have to do everything and can chose what to focus their attention on".
This is how GM mode typically works. Only a poor GM-mode would have bare bones "The DM does everything!".
Everything possible in the base game should be possible to set up for GM mode without GM input.
