Chad, at your convenience, please start testing whatever is easiest/most fun for you. :) And let me know if/how I can help.
Stakeholders: Meta community
Benefit: adds interwiki search that they want
Estimate: Actual code change is like 45 seconds. Maybe 2 minutes if you have to find the right file. We should monitor this as it goes into production so this'll take an hour long release window (simply because its the second wiki/wiki-family with this feature) and some extra monitoring.