When our service team creates the JIRA ticket from the Salesforce case, they would have to use the Create JIRA ticket from the Case. Then to associate the account, they need to leave the Case, go to the Account page, click to associate, search for the JIRA ticket by number, and then associate. Way too many steps.
Plus, they have to leave the case and go to a separate page. Since they live in Cases in Service Cloud and not the Account pages, it takes them out of their comfort zone.