Here's the current tech tree as generated by my new graphing library: https://konghack.com/.temp/graphvizV0EWPn.png

It's a temp file, so it'll get wiped in a few days.  I have to handle coloring, and see if I can't sneak some icons in there.  Either way, looking pretty damn sharp.  I could generate one of these per player on level up so you could see what you've got and where you're going. :)