This sounds like a good idea to me. In terms of content, I suppose we don’t really need updates when mods are readily available, so it all works out, maybe even better than it would with updates.
I think a game that you love and have been playing for a while deserves to have content updates every once in a while. I get that there will be mods and you don’t want to break them. Maybe some small content updates every 6 months or something? I just don’t want the game to stay the same forever, which I am not sure if I understood your plan. I support whatever you do with this game though.