GMT workshop still be accessible?

I was wondering if the GMT workshop items will still be on the workshop when Tower Unite launches

I don’t think so for the most part simply because most of the content will be irrelevant when GMT shuts down, but I would assume that the ones that still have some purpose outside of GMT (like the player models and playable piano) will still be available.

Well i like to use the GMT addons for modeling in single player

Yeah, we should keep them for the sake of use in Singleplayer.