We manage the product through Aha! and the priority of features with Aha! Score. Product management can be easier and more efficient with an option to inform developers about priorities directly from Aha! to JIRA (We use JIRA Standard and Agile integration.
Another related idea is JIRA to Aha! integration - when developer change priority in JIRA, it will send value to custom field in Aha! (Only 1 way, JIRA to Aha!) or map it to custom Score feature param - something like 'Developer LOE estimate'.