The dev team has several pages of info covering fleet strengths, planetary populations, population/refugee movements, planetary conditions and mineral wealth. Most of these were kept under wraps for several reasons, the three most obvious being:
1. To stop pointless arguments about "relative strength"
2. Prevent people trying to abuse/unbalance/skew/game numbers
3. Because it makes absolutely no difference to the players anyway
The only time those numbers would mean anything is if the server mechanically enforced the amount of ships available to each faction, and I'm fairly certain that isn't going to happen. All apart from population which can be collected by adding up the numbers listed on infocards (I think most are up to date now).
As for Kusari, well that is up to the respective players to decide.