That's pretty much the feedback we've been getting on them all along - nice idea, but more trouble than they're worth the way they are now.
This is why we're removing the bounty bag system in Mod 9. We still think that collector side-quests like that are a good idea, but we really need some time and a few more tech improvements before we can make them fulfill the purpose for which they were intended. We'll be revisiting the idea in the future, but we'd rather not have new players to DDO see something that just isn't working very well.
In the meantime, we've gone through the game and increased the experience rewards for the optional quest objectives. With the coming of Module 9, there should be good motivation for taking your time and getting all the optionals in a quest.
There should be more specifics in an official announcement sometime soon, but I thought I'd give you a heads up since we're talking about it.