Let us augment additional old gear as well!

[Ophannus]

Hrotti/Ridill/Valkyrie's Fork/Seveneyes/Hauteclaire/Hofud/Algol and a few other HNM items that exist. Either let us upgrade them with synergy using materials such as: Nidhogg's Scales/Dragon Scales, Hadean/Phantasmal Tatters/Khimaira Tail/Cerberus Hide etc... If we can upgrade weapons that were mostly unused like Seiryu Sword and Byakko Scythe the let us upgrade weapons that people actually used regularly and were extremely difficult to obtain. Some of these items are extremely powerful such that they only need a slight boost to become useful again, a DMG increase, a special trait or enhancement or bonus to the base stats on it for example would be a great start.

Hauteclaire
(Sword) All Races
DMG: 46 Delay: 240 Accuracy +7
Divine Magic Skill +8
Physical Damage Taken -7%
Additional effect: Light damage
((DMG+17 Damage taken -3% Fast Cast +3)))
Lv. 71 PLD / DRK

Ridill
(Sword) All Races
DMG: 40 Delay: 236
Occasionally attacks 2 to 3 times
((DMG+11 Critical Hit Rate+3% Attack+17))
Lv. 70 WAR / THF / DRK / BST / RNG / SAM

Valkyrie's fork
(Polearm) All Races
DMG: 95 Delay: 492
"Double Attack" +3%
"Store TP" +3
((DMG+32 Quadruple Attack+3 Critical Hit Damage+8%)
Lv. 75 DRG

These are some examples of high quality 3 augments that would make these weapons relevent again for the people that own them but don't wish to part with them.