YES, and NO. First off thank you for giving me some actual feedback that's very helpful. Second off there is a mechanism for combining its the rotator . 3rd I mistakenly launched it with trivial goals and couldn't replace it because the deadline had passed. So I pivoted to saying this is "sandbox" mode. In the end I'll probably offer both sandbox and realistic thresholds. In order to make the later levels playable I'll almost certainly have to give the players more design time, too.
In any case, impressive score, and thanks for sharing, it give me some idea of what the threshold should be.