Whoa, I'm glad you found my article useful!
Thank you for the new features! I really like the user reputation next to the username! A few months ago I was keeping track of those annoying spam followers that follow us the moment we publish a post (mostly low reputation accounts), and thought it'd be nice to be able to check the reputation without the need to visit the accounts' profile. Now, it came true! :D
Despite the 'aria-describedby,' my screen reader isn't reading the account tooltips (I don't know how other screen readers would behave, and don't have means to test). Sorry, no ideas for a solution at the moment...