So while browsing the LFS league forum, there is no overview if they are sprint/normal/endurance races, tracks used, car(s) used, dates and times races take place, if they are free to join or have other requirements, subscribed competitors and so on.

Therefore I would suggest a standard format with this information in the league section. If its desirable to have it on the index or in a corresponding league sub-forum I don't know. I'd just want something to get an overview of what is on offer.