EazyBI can probably do something like this for you. It is quite flexible, but may require some advanced chops to get what you want. I would add that I don't think there's any way to get it to display as a gadget in a Jira Dashboard. It has its own dashboard functionality.
...It's true that there are projects in Jira; but they are merely a way to cut off issues, to tell them apart from other sections of work and to apply rules that are specific to that team (the schemes)....
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