I'm pleased to hear that you like the idea - I've often been frustrated having to scroll past Resteems (i.e. contest entries) so it's good to hear that I'm not alone.

...who knows maybe even the feed will load faster on mobile with this option checked.

Sadly, I don't think that will be the case. The data's still being processed and the HTML is output to the screen but it's hidden through the CSS... you've made me wonder if I'd be better off hiding it at the render stage... 🤔