How does AoE2 DE's DLC system work?

AoE2 HD had its own system that allowed players to choose from a limited selection of the expansion civs if they didn’t have the DLCs. It also restricted them from playing any scenario from the workshop if it included content that they didn’t buy. I wonder if that’s the case for AoE2 DE since I’d like to add some of the new content to my scenario but i’m afraid that if I do so then a good chunk of the playerbase will be restricted from playing my scenario.