I would run the ILs for Super Mario 64 because this is the only version I have.

Level categories might be a good idea/more popular because of the lack of the usual shorter categories in this version of SM64 e.g 16 star or 1 star. I would definitely run them.

There are currently lots of discussions going on about the future of this leaderboard page and whether each game's leaderboard will be moved to that game's page. This might mean that each individual game makes a level leaderboard in its page soon, so keep an eye out for posts by the moderators here!