I think it would be cool if there was an ability to see your most liked post or comment. Like on your profile where you can see all the posts you made, It would be cool to see your most liked post.
That's not really possible anymore as the forums stopped 'recognizing' posts after a certain date in 2018. But no, it's not necessary and I believe other things need some attention from developers first.You can also just scroll a bit back through your posts and threads (search your own name or check your activity on your profile), not really necessary to add this.
Okay, now I have checked it, I myself can't look back further than January 2019 xD. So you can't find all your posts and threads, but you can find some.That's not really possible anymore as the forums stopped 'recognizing' posts after a certain date in 2018. But no, it's not necessary and I believe other things need some attention from developers first.