So I have been playing around with the system lately, and thinking about the use of Opposed checks for resolving some of the mechanical systems that don't make much sense. For example, consider a narrow hallway, packed with storm troopers at one end (minion group 3, blaster rifles), and our heroes, hunkering down at medium range.
Now, any sensical view of this situation is going to see that running straight down the corridor into incoming fire is going to be a really good way to get killed, however mechanically, a hero can use 2 movement actions to close the range from medium to engaged, followed by an attack.
My thoughts here are that if a character can perceptibly be prevented from doing something, this should be represented as an opposed check. In this case, the stormtroopers can oppose the movement, making the PC perform an Athletics vs Ranged (Heavy) check. Failure would result in not moving the range band, Threat results in taking glancing shots (stress), while a despair would result in taking the base damage of the weapon as a direct hit. This can be used to properly represent being 'pinned down' in a firefight, either unwilling, or unable to move to change the range. (Bonus, also makes athletics and brawn a little more attractive to range focused combat characters).
Taking it a step further, PC is engaged with a trooper. Ideally the trooper would like to take a step back from engaged to short range, and then use his blaster without penalty. However, the PC (who is locked in combat with the trooper), can choose to oppose the movement, forcing the trooper to pass an Athletics vs Athletics check. Failure to do so means the trooper was unable to dis-engage (or PC moved with him as he tried to back up), and is forced to use his blaster with the extra difficulty penalty.
As far as I can determine, this is more or less in the spirit of opposed checks, so not sure if this counts as an actual house rule, but so far it has seemed to work well. The only thing is to apply it when it makes sense, not necessarily every time (ie if the troopers have not yet taken a turn in the first example, then they are presumably not actively firing or aiming down the corridor, so opposing the movement in the first round would not be possible).