Thanks so much for your votes and comments on this feature request.
Good news! The upcoming release of JIRA 6.2 (planned for the first quarter of calendar year 2014) will introduce the "limited user picker" functionality for single user pickers based on custom fields. The limiting will be configurable based on rules, each rule defining a project role or group from which the users will be displayed. In case of multiple rules, the final list will be the union of lists as defined by individual rules. Rules will be defined within the context of the custom field configuration: therefore they will be separate for each combination of project and issue type.
As mentioned above, the rules definition will be applicable to all user picker custom fields, and as a consequence will currently not cover the scenarios for:
- the user picker for system fields of reporter and assignee (JRA-36896)
- the multiple user picker (
Thanks for your patience and we hope you appreciate our open approach to feature requests.
JIRA Product Management
bartek (at) atlassian (dot) com