Thank you for giving the game a shot, I'm really glad to hear you enjoyed it!!
The 2x2 cursor is an interesting suggestion... on paper, I do wonder how Kurukuru Twinkle's mechanic of swapping columns and rows in groups of two would impact building more precise shapes of circuits as opposed to simply matching blocks by color. That being said, I understand finding the cursor rotation to be a bit inelegant of an approach...I definitely plan to experiment with ways to further streamline the block-swapping process down the road