Oh dang, the boss appears right after that! If I'm doing my math right, 9040. Then the progression loops around again with an increased amount of snowflakes and faster difficulty progression.
I totally agree about the laser impacts! I'm thinking we might even just utilize a particle emitter. I don't think there's a lot more we're going to do, maybe some small tweaks. Those impacts could be a good increase to game feel for a small amount of effort.