What would be the prime objectives of a QSC?
If you just want to see who scored highest at 1000 BC or 1 AD we can simply invite players to post their scores at that date in the first spoiler.
If you want to be able to compare empires at a specific date, and to find out how the early game affects the eventual outcome, then we would need to analyse the in-game data and extract a lot of the types of information suggested by DaveMcW. That's a non-trivial task.
I don't like to dampen your enthusiasm, but we've already had two patches in as many months. Our main game management process is already trying to track and hit a moving target, and I suggest we might want to wait and see if the game is likely to change again in the short term before embarking on another major exercise. By all means lets talk about what it might look like, but please don't raise hopes for a QSC data extraction system to be ready for the next game ... starting in two days time!