I'd like to see contact lists be more like the ones we use in Gmail. For example, currently you can assign donors and bidders to "affiliations".

For existing contacts, it would be great if you could select a group of donor contacts and add them all to a particular affiliation. Currently, you have to click on each contact and separately add them to the affiliation group.

Also, there's no way to sort lists by multiple affiliations. For example, what if I want a list of donors who are in affiliations "church and NOT school".