Something about this is disturbing. Overwhelmed PMs are usually a sign of a larger structural issue regarding executive leadership or directionality. An app helps somewhat increase the volume of things that can be processed in such a rudderless structure is only going to compound the issue. In an organization where PMs aren't overwhelmed, this isn't going to be an issue.

Creating software to solve organizational problems is a dangerously seductive illusion. At worst, it could be used as a surface level token fix to allow leadership to wash their hands of addressing a hard problem.