Regardig the wiki, it does atm miss updates but thats well not impossible to get.
I belive the wiki needs a few things to become usefull
1. the wiki is imo missing a proper menu system, custumized for utopia to make the navition easy-
2. it needs tags, for those that are not familuar with wiki system, i mean that each page need to get tagged from for example 3 pre defined tags
for example
a. official supperted by game developer
b. User added and concidered correct
c. guesses and diffrent strategys ( not the only correct way but one way)
(this is only about right not the exact tag names :) i dont care to do indeep atm)
3. each topic also need to get an a footer that tells who updated it and for what age its updated.
If these things was in it, me and many others might take time to help keep it updated. but atm i feel it is not usefull at all.
One would also concider to look at the old utopia wiki and see whats in there and how its built.