Fay Weapon - system revamp

[Covenant]

I actually liked the system pre-magian trials of Fay/faerie weapons. It allowed job specific augements and misc bonuses to be applied to "strong" weapons by fighting at various locations in Vanadiel<s>. However, there are 3 major disappointments to this system. One, they are obsolete because of magian trails. Second, the random-nature of augments made repeat fighting worthless since a player could possible get a worst outcome than when they started. Finally, fighting in different areas didn't really change the outcomes all that much perhaps a point or two. I like to offer a few suggestions to "boost" these job specific weapons.
First, id like to suggest that each particular area give only 1 specific boost to a Fay weapon. So for example, west sararutabaruta<s> gives a damage bonus to weapons, and fort<s> gives a elemental effect, and another area gives the job specific bonuses. This would insured that players would experience each area particular battle, rather than just one fight to gain those bonuses. Basically, much like magian trails a player keeps working on only 1 weapon to gain "max" bonuses.
Second, replace the random nature of bonuses to a simple tier system with exponential fights for increased bonuses to max value. For example, doing windy<s> gains a damage bonuses of say + X. Winning 2 fights gives a player +(X+Y) DMG. Winning 4 fights gives a player +[X+(Y+W)]. Where X=start DMG Bonus, Y= ADD DAM, and W= increase ADD DMG.to max value of Z. Foe example, DMG is say 90, and each increment is +5 max value to say +25.
My version of a Fay system would reward multiple fights, at multiple locations, possibly cumulating with a Faerie weaponskill? Perhaps, even tied it into camapign, by having faerie "orbs" drop as rewards or Allied note purchase ala Voidstorm system. These "orbs" in turn would be a minimum number required to boost/attempt Fay fights?