That's why I was proposing to do the changes over time for all mobs, and/or change only one mob at a time wih some explanations (rites/events) in parallel.
As I see it, new mobs won't happen in the foreseeable future, and creating a new "flavor" of Ocyx that are suddenly fire resitance while others are not, that would be even more confusing. Unless the devs say this is easy, we can quickly create a new texture and wrap that around some Ocyx (like with the Anlor Winn skeleton yubos). And maybe after some time (a year or so), all the Ocyx are replaced with the new variety.
As I see it, new mobs won't happen in the foreseeable future, and creating a new "flavor" of Ocyx that are suddenly fire resitance while others are not, that would be even more confusing. Unless the devs say this is easy, we can quickly create a new texture and wrap that around some Ocyx (like with the Anlor Winn skeleton yubos). And maybe after some time (a year or so), all the Ocyx are replaced with the new variety.