Yeah, I considered adding more blocks or fully invulnerable blocks but other than inverted (needs to be falling slower than x to break) nothing felt interesting. Maybe a block that resets fall speed when broken can open up a few more puzzle ideas?
As it is, I feel like this concept is way too difficult to make any interesting puzzle maps for. Either everything is unbreakable due to preventing falling fast enough or everything is cardboard after the first move. As it is now, you can get to break everything speeds with 4 button presses…
Really appreciate the advice though