First of all, I'm making a Modpack, a remake of the legendary Hexxit Modpack (that means Hexxit for 1.12.2). I want to include many new mods, but the problem is: Many mod authors don't want their mods in Modpacks. If you want to include a special mod you have to download it separately. But not everyone will do this. I want to include the Lucky Blocks mod in my Modpack but that's not allowed. So here is my question:
Is there a mod which allows you to force the players to download special mods (if they don't the game crashes or says that they have to download the mod)?
I don't want to solve this problem with addons, i just want a mod which allows you to do that.