I would agree. There’s a reason it’s called a water smoker. I think I want to develop a silicone wsm water pan cover.
Guys like Harry Soo who compete using the WSM with no water in the pan compensate by spraying the meat with water throughout the cooking process to enhance the smoke ring. Using water in the pan provides some moisture that helps promote smoke ring, if you're into that.
There once was a member here who developed a disposable foil liner for the WSM water pan, like those foil roasting pans, but shaped exactly to the water pan.
https://tvwbb.com/showthread.php?60824-22-5-quot-disposable-foil-drip-pans