Yes, please do it!
Our goal is making science well-spead, and creating discussions with good content. I am sure you know people that would add.
As alternative, you can do as prof. Jude Kong did, he invited another speaker: Dr. Nicola Luigi Bragazzi !
My rule is: science goes beyond boundaries, as long someone can add to the discussions, he/she is welcome!
Sample of live with invited researcher
Do not forget to have fun!
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