...and so on. And watch that fight in the detention block again: there's a surprise round in which Chewie cold-konks one guy, Han blasts another, and Luke takes out a third. Then there's the actual first round of combat, where the three heroes are behind the cover of the control panel blasting the few remaining troops and starting on the cameras. Finally, when the reinforcements show up, Han and Chewie beat it down the hall, dig in for cover (to use your words), and start trading shots back and forth with stormtroopers (who, for whatever reason known only to Imperial training officers, DON'T get behind cover).
My impression has always been that the heroes in SW tended to fight fairly smart, and would only jump out into a hail of blaster fire when they were desperate or overwhelmed with emotion. (Look at the "Oh gawd what am I gonna do now?" look at Han's face before he turns the
Millenium Falcon to 'attack' the Star Destroyer.) A few times, they just flat out make mistakes (such as Han's totally blown "Move Silently" check when sneaking up on the biker scout).
And if you play like that, the RPG works pretty well.
-The Gneech