The chief problem of the theme-park rails.
Given that you are going to get "tickets" (quests) to rides (objectives) of short duration (so that you vacate the premises and let the next quester come in and get his own), you're never going to stay long in any area. Consequently, you can't take long to distribute gear; giving them from quest is much simpler than having your current targets drop it (or they need to drop every time). Also, since your experience is calibrated (you're in this area at level 33, that one at 34), your character power must be known and fixed within narrow limits. So, either gear gives you very little, or you must ensure a character has "appropriate" gear, meaning you distribute it regularly.
And this, people, is why you get showered in items every level tier.