That's right! At the Wikimedia Developer Summit, we decided to organize a Developer Wishlist Survey, and here we go:

https://www.mediawiki.org/wiki/Developer_Wishlist

The Wikimedia technical community seeks input from developers for
developers, to create a high-profile list of desired improvements. The scope of the survey includes the MediaWiki platform (core software, APIs, developer environment, enablers for extensions, gadgets, templates, bots, dumps), the Wikimedia server infrastructure, the contribution process, and documentation.

The best part: we want to have the results published by Wednesday, February 15. Yes, in a month, to have a higher chance to influence the
Wikimedia Foundation annual plan FY 2017-18.

There's no time to lose. Propose your ideas before the end of January, 
either by pushing existing tasks in Phabricator or by creating new ones. You can find instructions on the wiki page. Questions and feedback are welcome especially on the related Talk page.

The voting phase is expected to start on February 6 (tentative). Watch this space (or even better, the wiki page).

Cheers,

Srishti Sethi

Developer Advocate, Technical Collaboration team

Wikimedia Foundation

https://www.mediawiki.org/wiki/User:SSethi_(WMF)