The only real drawbacks I see are the card slots being crammed in the battery door and the lack of EVF, lack of open gate. The interference between the screen and the headphone jack would be a minor drawback as well. Otherwise, it looks like an exceptional value stacked up against everything else that's out there.
The 4" screen really reduces the need for an external monitor and I would like to see other manufacturers follow and the 32bit audio removes on more manual adjustment from the shooter's slate. I'd love to see these things integrated into another body with a slightly more professional build, and then I could be swayed to move over to Nikon. Maybe if the XLR adapter ends up working with the Z6 III that would be the move.
It's also a little shameful that Lumix wasn't able to build a camera with this same sensor that doesn't overheat. I wonder how that came to be.