The Line of Sight mechanic concerns me slightly, in that it would appear that it is not "reciprocal", meaning there will be situations in which a player will be able to say "I can see you but you can't see me". Is this a correct interpretation of the rules?
If the answer to the above is "yes", then I think this is illogical. If Han is firing around some blocking terrain at a Stormtrooper then logically the Stormtrooper should be able to shoot back, although I would expect the Stormtrooper to have penalties to hit.
[EDIT]
This is confirmed by the online "Rules Reference Guide"...
" It is possible for a figure to have line of sight to another figure that does not have line of sight back to itself. This most often happens when a figure is behind a wall or figure. Thematically, this represents a figure leaning out of cover to make an attack and then ducking back behind cover."
Even so, I would think that the target of the attack would have a split second to return fire before the attacker ducks back behind cover. Maybe one could house rule that if the target of the attack activates immediately after being attacked, they can return fire with some sort of "partial cover" penalty.
[EDIT 2]
There are a few other ways you could handle this in a house rule. One would be to allow shots against targets you can only trace a single unblocked imaginary line to at a penalty of adding something to the range to make the shot less accurate.
Another would be to trace line of sight from the centres of spaces instead of the corners but allow shooters behind cover to place a "shooting around cover" marker in any adjacent space and trace line of sight from that space instead. Enemy figures would then be allowed to fire at this space at a penalty of adding something to the range to make the shot less accurate. A figure would remove this "shooting around cover" marker if it moved into a different space, and would be allowed to remove or reposition the marker when taking another shot.
Edited by SmokeGunner