Having an history could potentially open abusive situations which are not welcome.

For example, I was the last player to submit. Reason is quite simple: I'm not on the same GMT that most players. I got home from work (yes, I work in the weekend) and I suddenly realized that the game was starting up and I was the last player to submit. Which I did ASAP.

However, in the course of a normal game I very often submit late. Very late, often at deadline. It is never intentional, because of GMT difference again... But someone who would want to mess up with someone else intentionally by looking at the history of uploads, finding up the habits of another player, and could try to adjust game time gen by submitting last early or late at that other player disadvantage. Depending of what would be best to annoy or try to corner an enemy who need to do extra MM in a war, for example.

So this kind of option is better left out, especially since it is not critical or even needed.

-EoF