[piccolbo]

Bundles are like thematic inboxes. So I can go into work mode, family mode, news mode and stay there for a while but look only at things that have not been taken care of yet. If you try and replicate that with a filter, inbox actively prevents it (label: something AND in:inbox). It won't show anything. Even apple mail allows that. Also the de-emphasis of read/unread status. You can archive without reading more than the subject, and it doesn't show in all the unread counts etc. When unread counts are so much in your face, it's hard to ignore them.