Unfortunately the game turned out to be a little bit too difficult for me. I managed to pass the first level and that's really it. What would help it is 'projecting' a position after hovering over the vector. I would love to see were it will end before I actually click it, alternatively maybe instead of clicking, dragging would help as that way I could see the position. At this point every mistake punishes me with 5s of waiting.
Overall I think the concept is great and that would really make interesting puzzle game, however as it is with puzzle games - player is going to make A LOT of mistakes, so he should not suffer much penalty for trying stuff out. :)