I'm not sure if anyone has said this yet because I haven't read everypage but at the start when the Star Destroyer launches the probe droids only one enters Hoths atmosphere but there are two crashes.

I was thinking that you could either add another probe entering the atmosphere after the first one or edit the film so you see the probe coming down then cut to Luke seeing it hit the ground and being attacked by the Wampa then cut back to the droid coming out of the crater.

And you could edit it so that the Imperials get the signal before Han shoots it.