Interesting proposal. That might make putting the games together more complicated. Are you worried about meta-gaming figle? I think the important thing is to make sure noone is in both round 2 games with someone else.
Assuming that isn't done, what ranks are playing together?
For example: Players rank 1,4,8,12,15,18,21 together? Or whatever.. I didn't really understand how it was put together last round.
My two games were:
8,9,25,26,39,40,54=201
5,11,19,24,26,45,49=179
So according to seedings, the second game should have been tougher.