A majority of the game for me and many other players, was spent making maps for others. I'm sure that when Multiplayer is released, more people will be joining and especially creating maps. However, I think it depends on how effective the "announcement" for multiplayer is. I know people who stopped playing, and are awaiting its release, but don't check the forums or the discord.
In all honesty, I am greatly looking forward to the Forum Booming again.