Woah...so this is a nice return to the most interesting parts of the series! With Senku sacrificing the ultimate trump card, it makes sense that they retrieve it and try to figure out as much as possible. I think we are getting a preview of how reviving key people will go. Eventually the masses will be revived, but until then, I don't think we have any "failures" (unless they are purposefully included to be a short term antagonists).
It was nice to have a "normal adult" (the CEO). She might never make an appearance again, but I guess eventually the corrupt adults will come into play.
But...the biggest key is that Why-man can likely make ALL the Medusa weapons he wants. The elite of the elite watch-guy is probably the perfect scientific base to explain the manga magic of Medusa. The biggest detail for me was that every part was made from a 3D printer. It is a strange material because Why-man is limited to whatever is on the moon/collectable from asteroids. With his level of science, man-making diamonds is a piece of cake, so he's got infinite parts and infinite energy sources...this just got REALLY interesting to me.
The mystery discussion thread has some major fuel to work with now, but I'm guessing this is the "lingering energy" that petrifies the new guy? They have the revival recipe, so it doesn't matter that he's re-petrified. If Senku isn't the one testing the command, then that's a major plot twist (but I'm assuming it's Senku that activates it).