Give multiple users access to Helpdesk tickets

We, at Scrapinghub, use UserEcho Helpdesk extensively for handling support cases. One feature that we miss a lot (compared to our internal development issue tracker) is the ability to give access to multiple contacts (on client siide) to a particular issue. Something simple like a secret link that we could share with people we want to give access to that ticket would be enough.

Is this something you have (or would) consider implementing?