2. Point out that there isn't a lot of increase in health in this game. Unless a player specifically focuses on increasing their Wound threshold, they're pretty much going to be as squishy later in game, as they were on day 1. Which is fitting for Star Wars. The heroes don't get hit very often, and when they do, it hurts . So point out that even the low level mooks you send at them on day 1, can still be a threat later on. Specifically, you won't run into the problem of having Stormtroopers (the iconic soldier of dread/evil from the movies), turning into a side thought, not worth considering. It won't be "oh great...more stormtroopers *yawn*" it will be "oh crap! more stormtroopers! run!"
A bit more on this: D20 pretty much assumes that the PCs will "win" every encounter, if you just stand there and take it. It's hard for some people to get out of that mentality, and it can be helpful to point them to how the movies are set up: the heroes are almost always on the run. This game is a lot more dynamic, and the players shouldn't expect to be tanks, at least not in the standard D20 way.