Nowdays adena cost nothing. Why - cuz of donator coins ( im not against donator coins) and most cuz of big quantity atm in server.
My idea is: if we want adena to be also usefull - we need some npc where adena to be constantly destroyed - mean - on that NPC should be put some Q items extremly excpencive. For example - Q for 3 rd profession - in last part we need 700 hallisha marks - so marks may be put in shop for 5 kk or 10 kk each. Dont put on NPC normal items - that will destroy economy even more. Put also baium blood for adena - for example - baium blood for 10 quest marks from shop each of that mark cost 2 kkk ( that only for example - ofc DN staff should think about what price to be stored and what items ). But rly - that will bring back value of adena.
Dont flame - that is just idea.
For example horn - horn cost 25 lunargent on mammon - 1 lunargent cost 800 kk on market, but adena transfered beteewn traders stay on server. If make for example "quest lunargent" and that lunargent cost 1kkk, and then put option on mammon horn for 25 "quest lunargents" that will destroy around 25 ~ kkk
p.s ofc horn should be also quest item.
After reboot there will be some modification for adena decreese, i worked last night on it.Also ill make some events regarding this case.Stay tuned.