Dual Blade revamp on RED

Ok guys one thing.
In KMS the ability to trade in the old mastery books for the new ones that can level up any skill was removed pretty quickly, think about it like there are tons of useless mastery books and we know we have stocks of them in our mules, and to have the ability to trade them in for the new ones for free would make the new system pretty much useless for quite a while.
Source: Plays KMS regularly especially during RED

 Spoiler

and about Zero they just simply have the books in their mirror world store both costing 5 mirror world coins each. "These coins are very easy to get by hunting and quests"

Goddammit.

And there goes more than half of my "excitement" for RED.