I used this application in the past:
HTTrack Website Copier - Offline Browser
It downloads an entire site, and has a decent amount of options for what it downloads, how deep into the site it downloads, if it should download off-site links / images, etc.
About five years ago I was downloading news sites and they would take up around 500MB - 1GB. Back then that was a decent chunk of size, nowadays that's barely a drop in the pail.
But yes, I would love a mobile view as well. Although with all the pictures in the threads I don't know how well that'd work on most phones. I guess it really depends on how they're handled... facebook mobile butchers pictures, but pictures from TSN.ca look nice and crisp.