There are different qualities that make up a good delegate in my opinion and they are not all required. For example I, like many in this field, am tech savvy but have limited knowledge of advance finance. Therefore as a delegate I am comfortable being a good player and making sure my server is secure, reliable, and cost effective. As far as picking feeds I could probably make an educated guess.
However what would work for me, and those like me, would be a reasonably extensive list of feed sources that the users could vote on much like they vote for delegates. Or perhaps the delegates could vote on (weighted by approval?). This would take the task of me, and my limited economic acumen, from having to source out a feed from whole cloth.