I'm wondering if this is just simply based on your ranking in multiplayer or how far you got in career mode, it would be smart if they looked at progress of everyone matched up in multiplayer and only showed tracks each player has access too rather then showing extreme track choices to a group of people just starting game and not seen extreme in career mode but i have no idea how it works.
Right now it doesn't seem rankings enabled yet in multiplayer,, been looking but data is missing, probably not enabled yet. Wonder if based on that or career progress or just UBI not enabled hard+ yet for multiplayer?