Hopefully Yoshi-P will consider adding content to the pre-50 levels as the game goes on. When new classes and races are added, going over the same content over and over can get boring. Things change as time passes and more content should be considered as adding to player interest.
It would also aid in getting the additional requirements for the higher jobs (bard, black mage, etc..) without getting players frustrated. It also would keep the lower levels active in the future for newer players to have more experienced players leveling alts available to answer questions and help with problems.
Just a thought.... ^.-