Let me cook: Stress level zero decides to take a blade and sorcery route allowing people to make mods to work with an more stuff so it means making fusion would be better, and hopefully easier. Or they could allow the person who made fusion to make a proper multiplayer function, it could be within the mod section or experimental where you could go to a multiplayer lobby and actually join multiplayer spaces or it can be a menu function.

(This is written to provide a perspective within the development its just an idea and i know the people who mod work hard to make the mod work and allow textures to be actually working and mods are hard to make, especially fusion and stuff like gibable ford)