I think the new guild quest, while more difficult, seem pretty fair.
The problem I have is with the reset time. As this happens in the middle of the night my time, I am effectively losing at least eight hours from each quest, four at the start and four at the end. I realize that this will change somewhat when the reset is changed to 0000 but the problem will still exist.
One option that could help this is if it would be possible to get round having to hit the tick button once the quests had completed, at least that would mean not having to be online when the quest finishes. When the quest finishes the GQ would automatically complete.
Another option that might help would be to run them for 2 days instead of 1, with changes to the amounts etc.