@Gargron I'd still dearly love good personae management, a la Circles, etc. One thing for friends, one for family, one for professional acquaintances, etc.
I know that this is 1. a Hard Problem and 2. we already have Lists here, but the Lists interface and support is difficult to use without a lot lot of clicking and poking. So maybe if Lists were better-integrated (easier to manage list members and use?) I'd miss a little less of the rest.
Thanks for asking!