I loved that you added a level select so we could try all of your levels even if we could not beat them. Often times in my game jams, there is a lot of content that none of my players see since it is too far into the game or is too hard.
I am not sure what the exact concept you were going for but I liked to think that it is not really about finding the perfect solution but rather about finding the solution that is most probable to work. I really liked the randomness of the boids and I wish I could see more of it, so maybe in each level you could guide hundreds of boids and the goal was to get a certain % to survive.
I wish you could move your attractor/repellor positions once they were placed down so I could adjust little by little each attempt.
Thanks for the game, I had fun!