@Hime I don't think 10 imperial cores : 1 onyx scale will be a good idea since there is no efficient way to farm it, you cannot get imperial cores anywhere atm, unless you mean the 8 from yunsang that is only available daily ( once a day/not farmable). Also a better way to implement this would be the exchange rate of sovereign cores, or any cores actually. Since we get so many Sovereign cores from easy mode now, it should (IMO) exchange for oynx scales and elder scales. Also while I'm on this subject, it would be better to have an exchange rate for Sanctum cores too, and since Nocturnal/Shimmering scales are not entirely useless, you can make it more reasonable like 20 Sanctum core : 1 Nocturnal Scale, or 1 Sanctum core : 1 shimmer scale fragment.
There's also a better option, which would be to make sovereign cores (easy mode cores) account shareable.
Sovereign cores are fairly easy to get now but there is also a current struggle on getting ANY scales now since we are limited to scales daily, rather than obtained and farmed through dynamic farming.
So since we got so many cores now, wouldn't it be a good idea to implement a way to let us use it to upgrade our gear?
Exchange Sovereign (easy mode cores) : Oynx scale/ Elder scale / maybe even blood roses too idk.
Even adding account shareable feature to Elder scales & Blood roses would be huge since many have it and no use for it. Like i got over 120 blood roses and 500 sovereign cores on my alt character who is using TB9 but my other alts could use it XD.