I doubt eso upgrades will come from the old 24 man raids personally. I think a large portion of the issue here is that they've milked the CT cow dry. People have played these to death and have little incentive to go back even with another carrot on a stick. Which sucks for the newer people who want to run thru it but that is the nature of MMO content. I think an incentive for newer players to run the CT raids would be beneficial. Say things like the FFXIII event items or something of that nature. The thing is that you really need to get the new people in there, the vets aren't really going to do this content anymore but giving newer folks an extra initiative to do them would bring some life back, ultimately it will be a temporary fix either way.