I love the idea. In fact, it's been on my to-do list for some time now. I just haven't been able to get to it yet.
I think the option will be in a drop down menu next to the Get More button. I don't think it's practical to get all pages, especially if there are lots of pages. That would slow down TorrentRover as well as anger the torrent sites. I'll probably allow you to get 5, 10, or 20 pages at a time. I don't think anyone will use the 20 option because it'll take longer than most people will want to wait.
Does that sound good? Any more thoughts?