Are the hats available on per-site metas?
9644
Why didn't (or did) I or some other user get a hat although the requirements were (or weren't) fulfilled?
52820
Combined flair for more than 7 sites
10343
Make voting activity on your posts available on site metas (what you would get from rep if metas had rep)
141324
Are historically-locked questions supposed to be hidden on meta sites now?
50469
Can all site-specific badge images be shown on all profile pages?
110746
Is calling for protest actions allowed on metasites?
139915
What about meta-meta Stack Exchange?
149417
Should gold tag badges in required tags on meta provide insta-close-dupe functionality?
96084
Flag indicator present on Meta, but no flags visible
131643
"Visit Meta" sidebar element on beta sites
6375
Are meta questions now featuring in Hot Network Questions?
33972
Can bug reports and feature requests requiring SE Dev attention be reported on per-site metas, or do they need to all go here?
87392
Add per-site Meta questions and answers to network profile Top Questions and Top Answers lists
142813
Can we lose our hats or it is a bug?
110907
Searching for a tag across all Stack Exchange meta sites
152789
No hats on the mobile version?
13508
Can we have cross-site badges?