Anybody ever tried this little gizmo?

Not these again. We've been down this road. A lot. I think @Johnny Mac actually did some drag strip testing. I don't remember the outcome, but I think the consensus was that if they did very much, they'd come on all new carburetors. They don't.
https://www.forabodiesonly.com/mopa...pson-powerblast-plate.423756/#post-1972323158
and here is someone else who tested them, but then corrected the problem
https://www.forabodiesonly.com/mopar/threads/shooters-that-vaporize-fuel.521361/#post-1973974590
We're in 100% agreement about better atomization. That's one reason why EFI has the benefits it does.
But depending on the design of the intake, it may or may not be distributed any better than a carb.