we were going to implement little sounds when upgrading a node, and when the resources fly from the resource display to the node itself, but we were running out of time and we couldn't figure out how to make it work properly in time. But yeah sure we will definitely improve even more on the visual effects/particles etc...
Yes we plan on releasing it on Steam as well, thank you so much for believing in the potential of the project, it means a lot for us!
Would you be interested in seeing this being released? You could join our Discord server to join our community and get updates on the development :D