SE needs to strike a balance that is for sure, but one way or another someone is going to get the favorable side of the development team while the other is left to wither on the vine thrown a few bones here and there to keep interest alive.
At this point I should probably reference the fact that Yoshida is aware of this issue and is going to, attempt at least, to keep his whole team on to continually add and develop interesting content for the wide group. We'll have to see if he keeps to his word, but I get the idea of being a tad bit afraid that your favorite job/event/gameplay aspect may get neglected. That's a common fear to have in an MMO.