Star Wars Outlaws doesn't let you free aim and fire from your speeder because Massive didn't want you to "feel as if you can ride in and assault people"
Star Wars Outlaws' lead gameplay designer tells me that one reason this design decision was made is to do with fantasy fulfillment – Massive Entertainment looking at elements of the original trilogy of films and trying to find ways to evoke similar feelings through interactive play. "What we see in the Star Wars movies is speeder chases – you being chased. We see you having to dodge and get away, and then try to explode their speeder or make them crash into a tree – especially when we look back at the original trilogy," says Fredrik Thylander. "We wanted to make a mechanic that made you experience chases, rather than having you feel as if you can ride in and assault people from the speeder."
This is a pretty different thought process than the title implies to me.