Thanks for the feedback.
Which browser did you use? Cause I tested it in Chrome and Firefox on Windows, and the scaling works fine.
Yeah, that's cause fullscreen is still not implemented. There's a fullscreen change event in JS, but a handler for it needs to be attached from a parent element, but the game runs inside an iframe, so there's no way to attach it. So... I don't know how to do it yet.
Yeah, showing more concrete changes applied by mods could be possible.
As for your video, if you ever play the game again, I'd suggest exchanging your low-rarity modifiers for higher-level ones. And using brakes.
