Sorry Tiamat, I don't think that you can draw the conclusion that the fluidity of this round is due to the reduction in tag sizes. (I had to point that out in case your post was used as justification for not reversing that change).
The latest change of #1 alliance is mainly due to CT kicking their top player.
As for the real effects of the tag reduction: I know of 1 "top" alliance which has no DC cover at all this round. (No names - no pack drill).