Custom Mount Roulette and Flying Mount Roulette

[Canadane]

Duty Roulette: Expert only has 2 dungeons, yet it's still considered a roulette.

Which means a custom mount roulette with 2 mounts would also be considered a roulette.

Expert Roulette contains all dungeons of the recent patch.
Mount roulette contains all mounts.

Bring able to pick and choose that you only want antitower in your duty roulette would be the same idea. You don't get a choice, that's the idea behind a roulette.