Once again thanks for taking the time to play my game! I really appreciate it! :-)
Good to hear that it adds some more depth with the new block-type and the ice.
I'm currently working on improving the visuals a little again and adding an overworld in the same vein as Stephen's Sausage Roll which has been a big inspiration. I'm not sure how the progression will work here, but I will probably have to redo a lot of levels to make them more challenging. I hope that the overworld could work as a tutorial in itself.
I'm also exploring the idea of a more vertical puzzle like you describe.
And thanks for the bug report! I just fixed it and will upload a new build as soon as there is more content.