It's not largely unrelated. Metallo came before Amazo. Putting him into a cyborg body would certainly work great as a stopgap to prevent him from dying. Either way, either Metallo or Amazo both require a power source, and this works pretty well.
You're thinking in terms of what it would be convenient for Dr. Ivo to want to do, not what Dr. Ivo is likely to decide or want to do.
Right now we have no experience with kryptonite as a power source and no special reason to expect it to serve as such without doing further research.
I'm trying to manage Dr. Ivo's discontent because we're seriously talking about keeping him off the A.M.A.Z.O. project for two turns in a row. We got away with it with the alien tech project because he learned so much that helped him with his own project. If we focus him on a random radioactive rock, there is no guarantee of similarly beneficial results, especially on a second turn in a row.
...
EDIT:
Unrelated note.
I think we really,
REALLY need to start cultivating more surveillance and espionage capability.
Right now, an enormous number of potential angles we could pursue in terms of recruitment or finding the weaknesses of our enemies are gated behind Intrigue actions that are just too hard for us to take seriously. Anything with a DC of more than about 30-40 is out of our league, realistically, and part of the reason so many things
are that, I suspect, is that we haven't taken steps to lower the DC of our Intrigue and investigation actions.
Basically, we want actions that make future actions easier, and enhance our capabilities to do what we please at a future time- to investigate enemies and reveal their weaknesses, to covertly remove obstacles to our success, and so on.
This is incidentally a good reason for us to try very hard to make progress in getting a search engine and social media platform. The kind of Big Data awareness Google and Facebook have is a
staggeringly powerful asset for purposes of spying on people. Google and Facebook just aggregate those data and sell it to advertises; we will have other purposes in mind.
So we should think about cultivating actions like:
[ ] Recruit skilled criminals (Diplomacy, DC 20)
[ ] Hire a private investigator (Stewardship, DC 58)
[ ] Design and produce spy drones (Stewardship, DC 20)
[ ] Create shell companies (Stewardship, DC 50)
[ ] Develop and produce disguises (Stewardship, DC 36)
[ ] Construct off the books servers (Stewardship, DC 42 (DC 32 if Felicity is assigned))
[ ] Develop a social media platform (Stewardship, DC 54 (DC 34 if Felicity is assigned))
[ ] Develop a search engine (Stewardship, DC 66 (46 if Felicity is assigned) )
[ ] Hire Lady Vic on permanently (Intrigue, DC 34)
[ ] Build surveillance satellites (Intrigue, DC 54, likely to get easier as our space launch capability improves)
[ ] Infiltrate the government (Intrigue, DC 46)
[ ] Create a worldwide spy network (Intrigue, DC 74)
[ ] Dirty Deeds Done Dirt Cheap (Intrigue, DC 55)
[ ] Learn about possession (Learning, DC 22, mind control makes for good espionage)
[ ] Improve learning program (Learning, DC 72, Big Data/machine learning applications to crunch the information we obtain from various sources)
[ ] Improve tracking chips (Learning, DC 17)
A lot of these actions are themselves kind of tough, but stack enough of them up and hopefully they give us
options and flexibility to investigate, spy on, and learn about things, instead of constantly having to throw two-hero teamups to accomplish basic investigative tasks.