I can imagen shots with Luke looking out the window, seeinf MORE walkers than ever before, and shots (like the one that shows the 3 walkers picking off rebel troops) with more walkers.
There is also a shot of when Luke attempts to tow-cable a walker, but fails and just flys under it, then a shot appears of the speeder going tword what seems like empty land, just snow going on for miles-its a quick shot, but I'd love to see abunch of walkers in the background, looking like a huge, massive offensive, more than just a little attack-