I like the idea. I just think the controls are very awkward. You have to constantly adjust the camera so need to use WASD/arrows with space and mouse, never a good idea and you need to keep switching hand positions. Why not just have an auto-adjusting camera? Would it be very hard to implement? The description is also wrong, you don't die instantly from high speed collisions rather you take damage proportional to the impulse you receive.
Tl;dr good concept but needs some easy tweaks to make it more playable.