If you haven't recently tried the EA forum on a mobile device, I'd encourage you to test it out. An updated mobile-specific view rolled out yesterday, and if it's causing any display issues for people I can figure out how to fix it.
(The new mobile view is not a full rewrite, it's just some css tweaks to make things tolerable on mobile. So there are probably things that will still be awkwardly small. If there's something that's bothering you, let me know and I can have a look.)
I removed the sidebar because I couldn't figure out how to make it work well, but then when doing the same thing with lesswrong I figured out a way to put the sidebar at the bottom and have it look okish: http://www.jefftk.com/lw-testing/discussion-new-bottom.png
So maybe we should do that here too?
This seems great!