Since we can forget about a hub map and since a compilation release seems to be the current objective and since it concerns the released maps, I would go for releasing all maps in one package at the same time.
This would imply setting a deadline not too far in the future so that the mapauthors can do their stuff, and those who (for whichever reason) can't make it are forgiven. I take it that there will be release notes for each map and the compilation itself will have a readme in which some history of the contest is exposed.
So, I agree with Hellscrag that the "bugs" in qtit's map don't jeopardise its inclusion. I would prefer a compilation of all released maps, rather than a selection. (In 50 years time when the world speaks about the compilation, they won't mention the maps not included