I sent these to cases@ironic.fogbugz.com via their support page.

Sent 10-19-2007

1. Smart collections. I should be able to hold shift and hit the + to add a smart collection based on certain tags. See Yojimbo for inspiration.
2. Option-click to filter. When I'm viewing a list of files, I'd really like to be able to see the intersection of one or more tags... therefore, I should be able to option-click to "turn off" certain tags. I don't want to see everything, I want to filter what I see!