Thanks for the feedback! :)
I thought timers would make spamming repeated operators (and thus optimising the fun out of the game) just fail outright... Well, that certainly did not happen. Thanks for the suggestion on having a limited number of clicks (or moves) for those levels, it's way better than mine, I'm a bit jealous that I did not come up with that myself.
I don't really know how to address rotate/invert/mod operators at the moment. I could always add a little tooltip that explains what these do... anyways thanks again, and I'll see what I can do with this game post jam.