Honestly, the growth of these threads has slowed to the point where leaving things as-is seems best for now. I don't see what's so hard about scrolling past a few threads if you're not interested in them. Putting them in the phone forums keeps people without that phone from joining in, and when you only stay in your phone's sub forum you really are missing out on most of the site, so if it encourages people to venture out that's a good thing. If they start growing like weeds to where they take up half of the first page then take another look at it, but right now I'm not seeing a problem the way things are.
"Machete don't text"