Aetherstones

[Sunhwapark]

These days, savage gear simply adds dye channels, but I wonder if reimplementing such a system would give players more incentive to do savage raiding after earning BIS.

It would make it easier to sell to non-raiders, probably.
People tend to do mercenary/carry runs for others that want specific items from content, in exchange for gil. I recall it being in-demand a lot when P5-P8s was endgame, no idea about nowadays but I would assume if the raid gear sets/weapons look good, people are willing to shell out cash for it because they want the fashion.

"wouldn't it be unfair/discourage people from doing the content if they saw someone running around with Ultimate weapon looks they didn't earn"?

The concept of a <<PayPal Legend>> doesn't exist to him, I guess.