It would be helpful to have an option to set Remaining Estimate to 0, rather than having to select "Set to" and enter 0.
Its not such a big deal to do that for a single story at a time, but is annoying when you're trying to update several stories in a row.

On a related note, it would also be nice to have a user setting that would allow you to default to "set to 0" rather than "adjust automatically" when resolving or closing an issue.

Related to case: http://jira.atlassian.com/browse/JRA-1993