I, as are probably everyone else, am looking forward to the addition of tech trees in Kerbal Space Program. That got me thinking. Here's my suggestion: (Warning, spoilers ahead) What if you could use the current 2001 space odyssey-esque monoliths scattered around the Kerbol system to unlock new part trees. I don't mean just singular parts. I mean entire trees of parts. For you to use the monolith, you would have to get a Kerbal to stand next to it, right click the Kerbal, then select a new option: photograph. Your Kerbal would then walk around the monolith , taking pictures of it as he goes. Once you take off again and land back at KSC, then you can recover your flight. That will then add the monolith-specified branch to your tech tree. For instance, one of the monoliths on the moon would unlock the Nuclear Power branch, which includes NERVAs, RTGs, etc., which you would then have to research. Another monolith might contain advanced alloy technologies, which, depending on what level you research it to, would reduce the dry mass of everything by up to 50%. Maybe you could even go to the site of the "Duna code", have your kerbal listen to and decode the SSTV signal, which would unlock major things, such as new planets, maps of existing planets or even new star systems. Just my idea for the tech trees. Any suggestions, constructive criticism, or death threats are welcome. Well, maybe not the last one. You get the point. Hope you enjoyed my idea. P.S. Sorry, spoilers didn't work. Anyone know how to do them?