Cross posting of tasks

Our number one most requested feature is simple: I want to be able to post a task from one board in another.

Here’s an example:
QA posts a bug for Project X in the Board ‘QA Backlog’
I want to be able to cross post that task into the Board Project X’s Group called “Bug Backlog”

I know Mirroring exists, but if the Board has 8 columns and the Bug has 8 columns, that’s a task with sixteen columns, 8 of which I won’t use. It’s impractical. I just want this piece of data to exist in multiple places.

Have you looked at using the automation recipe “when an item is created in this board, create an item in another board and link them using link to item column”?