I think all in all its a more or less commendable addition to the game. Its just a matter of how SE balances the bonuses. I'm hoping for a scale like this:

<--[NH0]--[NH1]--[NH2]--[NM0][NH3]--[NM1]--[NH4]--[NM2]--[NH5]--[NM3]--[NM4]--[NM5]

NH = Normal Quality and High Quality, paired because they should always be within a 3~10% range of each other
NM = Notorious Monster / Special Gear
# = Number of Augments.

This is assuming all of the pieces in question are the same level.