The movement does feel like it leaves quite a bit to be desired. It seems to move completely linearly and steady despite the leg mechanisms that would produce a lot more lift and turbulence. I feel like the mid section of the vehicle would be experiencing sizable movement as well. To justify this kind of movement the mid part could be some kind of stabilizer for the top. Right now the top part is functioning too independently from the rest imo just rising up and down.
I really like the other movements, the cloth and cat tails etc. I think that same effort could be spent on the main feature.