This is literally the most minor suggestion, but there are some buttons on the site, most notably the leave a comment and pet like buttons, where the cursor doesn't change to a pointer cursor to indicate that these things can be clicked on. Whenever I'm coding a pet or user profile, I usually just add a code in that forces the change to happen, but it would be neat to see something officially done. It's just a minor pet peeve of mine, and honestly isn't that huge of a deal.
I'm not sure if there are any other buttons or links on the site where it doesn't change; these are just the ones I found personally.