ok well in not sure if you will make a version 2, i so hope you do

some ideas i have
)add option to reveal puzzle and have no score or ranking applied, as i love to see peoples work with out some of the struggles of solving the impossible.
)what about adding a toggle switch and tag to any block that can change another block to another type or have the block rotate.
)lane change, um a chicane 2x2 block that snakes from one lane to another, although u can do this with conveyor belts, i find them unpredictable (just me probably lol)
and well if anyone else can add to this, i would love to hear your ideas too.
: )

Rotation for the view .
It's hard to see what you are doing when you are building behind some large items.
And a fix for a bug:
Every time you click on an empty place in your "inventory" the original item is replaced. But i can't place that item on the board anymore. Same goes when i use 'Hint' and it replaces an item on the board.

Maybe an other extra option than just rating, is to give the puzzles a difficulty level chosen by the players.
Cause sometimes there is a puzzle rated as "Very Hard" (since there are a lot of pieces to be used) but you can see imminently how the puzzle is build.
On the other hand, you have puzzles rated as "Easy", but those are sometimes brainbrakers because you are very limited in your items.