Hey!
On our Discord server, we have posted a list of all the mechanics and content we've added to the Shop Tycoon so far, and more importantly, a list of things we'd like to add to our game highlighting what else needs to be done for the first public build to be released.
Forgive the rude ad but we invite you to read it here. It's easier for us to keep it updated there and not placing it here as it may become outdated pretty quickly and that makes no sense.
Best regards! :)