I didn't want to put in new prereqs since I believe it should be the team's decision.
A tech tree that just has a bunch of stuff cut out isn't helpful; we need a working linked up tech tree. So, think about it and make some decisions about how you think the tree should be set up and modify the file accordingly. If there are problems, they can be discussed and fixed. Feel free to move stuff around, combine techs, add techs where appropriate, etc.
The point of getting new people to contribute is to get more stuff done, not to make more work for people who already are working on things (which is all that a partially edited file would do). "The team" is people who contribute useful content or discussion, not some exclusive club to which you mus be explicitly granted access.