I find this level interesting. It gives just enough space to go wrong. :)
EDIT: Wooow, FlashBack's 216 was a surprize. It took me quite some more tries to find it.
Ok this ended up pretty good. It's quite difficult to figure out what to do at first, then you find it and it appears forced but there are more possibilities than meet the eye.
Great puzzle, it's quite difficult to figure out what to do and the optimizations are tricky as well, but it's all very doable and the design is well-focused.
