Re: Success rate
Hey now! They did a great job of studying the regolith!
They have shown, one might almost say 'conclusively proved', that the lunar regolith is harder than a lunar lander. Of course nay-sayers will claim that we knew this already, but did we?
OK, maybe we did, but they have at least proved that that particular bit of regolith is just as hard, and unsuitable for litho-braking, as the rest of the Moon.
Now I hope everyone will contribute to my crowd funder to send probes to crash into every other bit of the Moon as well. In the hope that at least some of it turns out to actually be made out of marshmallow.