Basically what the title says. It's not necessary to change it right NOW but please, please, for the love of sanity PLEASE make this change when the level cap goes to 30. The (estimated) 4million xp that you're going to need for those last two levels will be a NIGHTMARE for people grinding eTR's. Don't penalize people who didn't get everything done before the cap raise. Let us eTR based on our sphere xp instead of forcing us to XP cap all the epic levels.
Also you may want to consider buffing the iconic TR abilities to account for the HUGE increase in required XP grinding to get them.