I think that 2,500 is the best balance in a game. Tournaments should be 2500 points per army, instead of 2,000. I have even heard a guy who was hosting a RTT say that 2,500 armies would be better.
Also, about the . and , and (space) within the thousands, who really cares I am sure you all know what is meant when you see 2.000 anyways. Yes, the Europeans use . instead of , but the americans also take out a lot of letters from the english language like honour, (honor) cheque, (check), and armour (armour). But all in all, does it really matter.