Yeah these are valid critiques, thanks for the feedback!
I tried to fix the issue with the difficult to see pieces by adding a subtle glow to the cursor without it being distracting but it still can be hard to see them.
As for the 'click' when pieces are close to each other, I didn't really know how to do this without making it possible for the player to just brute-force all pieces together until they 'click', thus taking away any difficulty. There's probably a way to overcome this issue but, to be completely honest, I just wanted to release it haha.
I do appreciate the feedback though, thanks!!!