I am sure people have suggested reminders for when you have active stud requests before, so this may not be anything new.
I thought it would be nice if there was an additional “Tab”/Link at the top, near “Messages” for Stud Requests. The link would just take you to your Stud Requests page, and if you have active stud requests it has a number next to it to indicate you do and how many. I know sometimes it’s easy to forget if you’re trying for an especially low fertility lioness, or when someone sends a request when you’re out of energy.