Perhaps a balloon would be a better concept.
simpler technology with few moving parts.
of course getting it to go where you want it to go might be difficult.
but letting drift where the winds take it could bring unexpected discoveries.
Not enough ways to waste money but great idea.
I like your balloon idea.
Solves the vertical lift problem nicely. Directional control shouldn’t be an issue unless there are very strong winds.
I wonder if it would need to be a rigid, vacuum-filled balloon. 1/2 of 1% air density as compared to earth’s atmosphere is pretty light. Not sure helium is even that light.
A balloon tethered to the rover would make more sense. What is the purpose of the flyer but to get an aerial view of things.