I think I'll 3D print the wings and have them retract similar to the 4.0 version. Apart from that though, I'm finding it tough enough to make it original since both the 3.0 an 4.0 are very well designed.
What about the wing retraction, any thoughts on mechanisms? I can think of basic and standard ideas but i want mine to stand out from the rest of the class. Even any added ideas on added mechanisms you could add?