For gamers to send in bug reports that go beyond a stacktrace, it would be nice to have a browser-based version of the Simulator's Console output so they could send debug output to the developer without having to install the full SDK.
Seems to me that the pd-usb project is 90% of the way there, see here for working examples:
You don't even even need pd-usb for this. If you look at the USB reverse engineering in the cranksters/playdate-reverse-engineering GitHub repo you would realize that the Playdate uses simple serial so all you really need is a Web Serial console with the correct options configured, of which there are already customizable Web Serial consoles out there. They probably won't do this themselves because it would be limited to chromium based browsers.