That’s been brought up before and has been shot down. The game approval process is not entirely linear to what’s in the queue, meaning that sometimes games submitted after yours will get approved first. This can be for a variety of reasons because the process is manual by site staff.

This feature would only increase the amount of posts saying “why wasn’t my game approved on X date like you said it would be” and that’s not good for anyone.

There is no "expected date" for game requests. It happens when it happens. Throwing an arbitrary date up would just be confusing and cause more frustration if those "deadlines" aren't met.