User blog comment:DaNASCAT/Technical Update: April 4, 2016/@comment-5275700-20160405201320/@comment-1824272-20160406124027

In summary: "We have no reason to share."

We were looking for an explanation to all of this, and as far as any of us know, the developers for Maps got fired or got lazy, or they were forced by executives to work on other projects, or someone in an executive position at Wikia disagreed with the idea of Maps and decided to axe it, or something completely different.

This is what we mean by the lack of transparency. We weren't looking for a "particularly satisfying answer", we were looking for an answer, period, and we didn't get one. This one is going to leave a sour taste in a lot of our mouths, not to mention the complete lack of attention at either Thread:1001851 or the Maps Wiki's General Discussion board. Nothing about this - lack of staff, lack of transparency, shutting down a useful service many of us were using - is good, and we still don't get any reason for it.

@SpikeToronto: Unfortunately, neither Maps nor ImageMap provide anything close to the functionality that Wikia Maps provided. The big thing Wikia Maps allowed for was being able to use a custom image, such as those in fantasy universes. The Maps extension doesn't seem to be developed enough because it has some massive styling issues on Wikia, and it doesn't like to play nice with custom images whatsoever. ImageMap doesn't provide markers or zoom/pan functionality. We need a third-party solution like Wikia Maps to be able to use those functionalities on non-Earth maps.