I'm one of the current volunteer maintainers of themirror.clarkson.edu site. We've made some changes since we first started hosting msys2.

New mirror contact email: mirroradmin -at- clarkson.edu
Upgraded internet connections: Theoretical 2 gigabit upload and maximum measured in the last 30 days is 1.73 gbit/s.

Does this mean we can become a Tier 1 mirror?

Feel free to let me know if there is anything else we can do for msys2 :)