I want to push back a bit on the notion that Ingenuity is over-engineered. I think it’s well engineered.
The expensive part of the mission is getting the opportunity (!) to fly on Mars. So you design the vehicle so that it’s really, really likely to work on day one: about as likely as you can make it for the mass and power budget you have.
So unless you have consumable or degradable components or have an accident, it’s still the same reliable vehicle on day two and day 100. Doesn’t mean you overdid it, just means you nailed day one, which was your job!
The expensive part of the mission is getting the opportunity (!) to fly on Mars. So you design the vehicle so that it’s really, really likely to work on day one: about as likely as you can make it for the mass and power budget you have.
So unless you have consumable or degradable components or have an accident, it’s still the same reliable vehicle on day two and day 100. Doesn’t mean you overdid it, just means you nailed day one, which was your job!