Pretty fun tool
Good Points:
I like the wide range of tools you can use this time around and what you can do with them. The ability to perfectly scale things this time round is very useful when trying to cram alot of materials into one area. The ability to unlock things makes the game almost replayable, because you can back to see what you didn't unlock and try different methods to do so.
Bad Points:
How I see it, it's the same old thing just with extra things, normally this would be fine but I figured the first one could have simply been updated. The amount of different things added does not really create much EXCITEMENT and is more or less the same old thing.
Overall:
Good game and concept, but I don't think you added enough new content to actually release it as a new game.