I've just been to the GC2 wiki, and most of the pages have the bare minimum of text. It really needs someone to write some decent articles on the game's mechanics. If I had the answers I would gladly do it, but the whole reason I went there is because I don't. The numbers and formulae behind this game are too complicated and not documented properly.

For example: I wanted to check out the tech "Planetary Improvements". I know it gives +10 to each kind of production, but I don't know what that means exactly. I assumed it meant a 10% increase, but the article doesn't confirm that. It also doesn't say in which order the bonuses are applied, and if you have to pay for them. Are these bonuses added to the ones from starbases, or applied before?

The social production page told me that you have to pay for 50% of the bonus production you get from racial bonuses. That's the first time I've read that. I would have assumed you had to pay 0% or 100% of the bonus, but not 50%. It seems a bit overcomplicated, and I doubt I would have worked that out by myself.

Another thing - with Impulse Drive you get +10 speed. Is that also 10%? If I made a ship with a base movement speed of 20, would it be able to move 22 parsecs a turn?

Not all of the wiki needs work - the "Approval" page is very well written. It really gets into the meat of how approval is calculated. There are other good pages too. This wouldn't bother me so much if the game had some kind of help system built in.