Taking away the best pvp maps this game had won't do much good.
Sarpan will be lost, so probably no more duels at Recharger. In addition Tia, Katalam, Danaria and Underground will be lost... for Signia and Vengar? Definitely not worth it! Those two new maps weren't all that good. I don't know for sure if Akaron and Kaldor were added in this patch too, but even those weren't as lively as the previous maps.
In the end it was the Patch 4.6 that got most of the people to play here and not any other version.