All right, although the number of people that read this blog is still bellow 5, here is a whole new level: turnaround.xye. It is mostly about turner blocks. It has two star challenges, so if you want a new challenge , this is a good place.
To install it, place the file in the levels subfolder (windows) or /home/yourusername/.xye/levels (Linux and similar).
Update: This level has been modified a little. It should now be easier to solve it without getting the stars.