A single project with multiple repositories

I use Jira Software Server integrated with BitBucket Server. We are beginners.

In Jira I have several projects, some projects vs repository the ratio is 1: 1, others the relation repositories vs projects is N: 1 (A single repository belongs to several projects).

On the BitBucket Server side, I'm thinking of having only one project. And in this single project, I would own several repositories.

My motivation for this is to have reports and charts in a consolidated, grouped way, in a single vision.

I think with that, I would get close to what is asked in this Issue: https://stiltsoft.customercase.com/forums/awesome-graphs-for-bitbucket/ideas/112433-across-projects-graphs

As we are beginners, so I ask, what negative impacts, I could have if I use is above configuration above.