Thanks for voting and commenting on this issue. Your feedback is key to helping us understand how you use JIRA so we can continue improving your experience. We have reviewed this issue over the last few days.
This suggestion is important for the JIRA development team, but we have not scheduled work and cannot provide an estimate on this. However, there is related work in progress, specifically JRA-7824 and GHS-6541.
I also encourage you to browse the Atlassian Marketplace for issue cloning add-ons. You might find add-ons that meet your requirements there.
dfranz at atlassian dot com
Principal Product Manager, JIRA Platform