Alright so this one would be very very good for games with a lot of ILs. I'm mostly suggesting this because I thought of it while I was grinding ILs and got annoyed at how I had to scroll far down every single time I wanted to do some of them.

Also I know that some boards have chosen to solve this issue by splitting into extra sub-variables, but this also poses another issue that I'll talk about later.

So here is my idea, add extra categories for ILs.
https://i.imgur.com/SBcnpkJ.png

I've been just messing around with Inspect Element just to make a little concept of how this would look. Essentially, make it so that moderators can make extra categories, in which then these levels are split into their extra individual level categories.

Now while it is true that you can just create an extra variable and what not, this would then again create a problem where you need to actually click in on the IL to see what the top time is for the level you're looking for.
https://i.imgur.com/sdKuu7D.png
https://i.imgur.com/jyhQITr.png

This would solve that issue as well, and if a leaderboard moderator chooses to split the category, they will have the Individual Level boards show up like this, instead of a long list of all the levels.
https://i.imgur.com/tQHej7Y.png

And this is how I would imagine it would look like if you click on it.
https://i.imgur.com/hZI8pME.png

What do you think?

I've had a similar suggestion like last year, 
but on a more broad scale (making completely new leaderboard pages inside a game)

https://i.imgur.com/S0MN2uM.png

So Multi-game boards could do something crazy like this instead of the subcategory mess that it is rn.
https://i.imgur.com/hVIA7O3.png


your suggestion is also top notch!
love it

Thats also really good, I hope whenever the new layout comes around that features like these could happen.