A few weeks ago, a few Wikia and Wikimedia people started talking about rewriting MediaWiki's web API for greater flexibility, usability, and standardization. Notes from that meeting: https://www.mediawiki.org/wiki/API/API_rewrite/Kickoff_meeting
Federico Lucignano is one of the main developers on this effort. He will be doing API stuff for Wikia for the next 5 months. Wikia wants to attract motivated app developers and companies using Wikia's products to use the API. They also want to make the APIs more standards-compliant (a RESTful interface, using HTTP verbs), but that's a high-level goal. Mobile-related work is first, driving the direction of some of Federico's work, but this redesign would improve the whole platform, including the enterprise.
Wikimedia and Wikia want to work together on this. Wikimedia Foundation also wants to avoid boxing ourselves into special-purpose, specific apps. Right now we're in the very early stages and I believe Wikia's going to put out an RFC -- the initial research we discussed during the kickoff meeting is starting this week.
Some people have also begun talking about this issue on the bug " Make MediaWiki more RESTful": https://bugzilla.wikimedia.org/show_bug.cgi?id=41837 in case you want to check that out.
Welcome, Federico!