Thanks for your feedback.
Please keep in mind that this is an idle game. It's normal that there's not always something to do. The idea is more that you log in from time to time to buy more generators and then let the game progress automatically.
I do like your ideas for minigames though...
I've also thought about adding small minigames. However, this isn't a simple or quick task. That said, it's definitely possible that something like that might be added in the future.