There were many times i called my chocobo to my side to pick me up from a camp ground to take me to the next one as my party would end. Having to go all the way to a moogle or town to drop off gear and items or swap gear was an annoying trip.
When in certain areas it would be nice to call my chocobo and get a menu of items it was carrying to trade out with back and forth. Say maybe a 15-20 item limit. Or have a drop off command that took selected items to your mog house for you. Bieng a pack rat i never wanted to toss away a stack of bones or crystals. That would seem like a way to make switching jobs on the fly a bit more feasable as well. You could keep your swap gear on your bird and swap when needed. It could use the same counter as when you call your chocobo.