professa said:
the problem i see with doing this is that even if a lightsaber can cut through anything there should probably be a drag factor when cutting through armor like that - think qui-gon melting the blast doors in tpm but not so severe. that may make it undo-able. plus ady didn't seem too keen on this idea iirc. still he's changed his mind before :)

Well, it's also the arc of the lightsabre.. does it go "through" the outer armor plate above Luke when he swings it? Even if the extra FX work is simply on the door itself (to make it a hole he's cut as opposed to a door that just opens for him) that would work, but one has to look at the path of the sabre as Luke swings it to see if the FX goes through solid objects without any interaction, regardless of what that interaction would be.

in regards to the AT-AT foot crushing the snow speeder:
have you seen what happens to cars and even 18-wheelers in high speed accidents? The snow speeder is not going to weigh very much being that it is a flying machine (anti-grav or not) and the foot on an AT-AT has to weigh a few tons alone. Combine the two and just the initial foot stomp is going to crush it like a tin foil model (with bits and ends up-ending from the foot crushing down into it), which would crush the snow speeder even MORE when the weight of the AT-AT shifted onto that foot when the others start to move.