No, because issues live in projects, and one of the most important things a project does is provide consistent configuration of the behaviour of the contents.
I know what you are looking at when you say "bucket" and the simple answer is that you should consider a JIRA project to be the same thing as a bucket in the legacy systems you've got the idea from. That will mean you don't need to worry about issue security schemes, and just get the permissions right.
The Jira Marketing team is putting together an ebook on migrating to Data Center. We're looking for pro tips on how you staffed your project team and organized your Proof of Concept. Share yo...
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