Here's a distrubing trend I wasn't aware of: Accepting a Caravan Escort quest only to run to the completion point and gather while others do the work. What, really?
Only eight people at any given time can take part in a Caravan Escort, so when you manage to gather a full party in hopes of doing 1,000 seal runs and you're greeted by a parasite who edges out an unlucky party member, then proceeds to take a seat at the end, no one's particularly happy. As for a way to fix this, there's always the method of creating a "Quest Area" around the actual caravan similar to the red ring you find in instances. If you leave it for too long, you abandon the quest. Simple, I'd think. I wouldn't want it to be made something purely for parties, as I value the pick-up-and-go mentality if it's available.
It might be different if you could just go somewhere else or do something else, but as of now (and more so recently) Caravan's appear to be one of the only ways of getting a decent amount of seals in a group. Here's hoping this issue is at least recognized.