As myself, I am more willing to participate in old tokens or bounty projects that have been trading tokens for more than one year. I missed many airdrops of projects such as XLM, I think there are still some contents that are valuable.
So I think that those who like bounty projects can exchange more together, so as to avoid missing some good content and waste time participating in some garbage projects.
Where do you find the bounty or airdrops for the old projects ? The airdrops / bounty are mostly for the new projects or ICO and we can only guess if the bounty we collected could be valuable in future or not. I myself have collected few ICO coins which had good rating on ICO ranking websites but they failed miserably. Collecting bounty is like a gambling, it may be a hit or just a waste of time.