[sirinsidiator]

yes, you can either intercept it on the progressbar itself, or before it gets handled in the center screen system

Here is some untested code:

local SKILL_INDEX_LEGERDEMAIN = 1 -- no idea if this might change in the future or if there are other constants already
local handlers = ZO_CenterScreenAnnounce_GetHandlers()
local xpUpdateHandler = handlers[EVENT_SKILL_XP_UPDATE]
handlers[EVENT_SKILL_XP_UPDATE] = function(skillType, skillIndex, reason, rank, previousXP, currentXP)
  if(skillType == SKILL_TYPE_WORLD and skillIndex == SKILL_INDEX_LEDGERDEMAIN) then
    return nil
  else
    return xpUpdateHandler(skillType, skillIndex, reason, rank, previousXP, currentXP)
  end
end