Add new difficulty type for tracks

[Keyran]

Some custom tracks are insanely hard compared to the stock tracks rated Extreme (and Museum 1).
Why not add a new difficulty type above Extreme? Future tracks as hard as Cliff Mountain Trail, Spa-Volt 1 or Fairground 2 could have it.
I know the difficulty depends on the feeling of the player, but for some tracks it is obvious they should not be in the same category than the hardest stock tracks.

[607]

Not sure. Personally I think Extreme is extreme enough, unless it turns out that half of the custom tracks end up rated Extreme.

[ZipperZbieracz]

Re-Volt stock track ratings are a little bit all over the place. Museum 2 and Botanical Garden are more difficult than TW1 and TW2 and imo should be rated Hard or Medium rather than Easy, while out of 3 hardest stock tracks (Hood2, SM1 and Mus1), 2 of them are rated Hard rather than Extreme. In the end it's just an option for the trackmaker to put the estimated track difficulty in their custom track and 4 ratings to choose from is fine. And complex custom tracks tend to be hard/extreme, because the authors often put a lot of "stuff" in them – lots of turns, lots of obstacles, blind turns, array of turns one after another etc.