Individual gadgets are not handled centrally by the developers, admins of each wiki deal with it. As such, this request needs to go to the admins of that wiki, and I do not believe they track tasks in Phabricator.
Some Meta-Wiki admins also use Phabricator. :-)
Phabricator is a collaboration platform open to all Wikimedia and MediaWiki contributors. We focus on bug reporting and software projects. Non-technical initiatives are welcome as well.
Please let me know if there's an actual issue with using Phabricator to track requests like this. Using a task manager as a task manager seems perfectly fine to me.
I know we've previously discussed per-wiki family projects/tags, but I don't think any ever got implemented. If a new project/tag needs to be created, I guess that would be part of a separate task. (You would almost certainly know better than me!)
Will meta admins be watching those projects for tasks to take on? Or, now that you've decided that Phabricator is open for such requests, are we going to have to come and nag you to deal with each of your wiki's users who expects us (developers) to mess with your wiki's gadgets, instead of sending them to you?