This card tracks a proposal that's currently part of the Community Wishlist Survey: https://meta.wikimedia.org/wiki/2015_Community_Wishlist_Survey
The Wishlist Survey voting phase lasts until Dec 14th. After the voting has concluded, the top proposals will form the backlog for the Community Tech team to investigate and address.
See also T14019: ifexist function uses pagelinks table in lieu of better options, which may overlap/duplicate.
Pseudolinks #ifexist by using the parser. On Special:WhatLinksHere also pages are disturbing enough, lists that contain templates that use #ifexist. Known since 2007.
--Atamari (talk) 19:24, 10 November 2015 (UTC)