We're evaluating the 45 demo of fogbugz. Thus far I like it, but there are some obvious things I'm missing.
What boggles me the most is how I can easely alter fields in the list view. I would like to open the detail screen as little as possible. It seems to be possible with the estimation column, why isn't it possible with all the other fields (like project, priority, status etc.?).
FogBugz 6 isn't big on customisation. You can edit the categories and statuses in the database tables directly (though you need to edit the "internal" project and click OK for the cache to be refreshed.
FogBugz 7 is coming out this year hopefully, and may well address many of these issues.
What you are asking for can not be done in FogBugz 6. You have to open up the case in order to edit most of the fields. Why they made exceptions for time estimates, I don't know.
The rationale here was as a feature to accompany quick case entry. (That's the "Add Case" link at the bottom of each group or at the bottom of the grid.)
The thinking was that it'd be neat to be able to add cases quickly and then burn through the list, estimating them quickly. We didn't really expand our thinking to include moving cases around or changing things like releases/milestones, etc.
This is something we'd like to offer in the future for many more fields, and one of those weird situations where adding a small, specific feature can sometimes make the fact that the larger, general implementation of that feature isn't there yet.