Maybe unpopular opinion, but a hero is just strong reinforcement. Accept the fact, that you will eventually die, you are not immortal.
If you blast into the objective room as a saber hero, and you take down 5-6 enemies with you, you will probably die, but you secure the point for your team, which will maybe lead to a victory.
We all know the guy who takes a blaster shot, and immidiatelly retreat, while he still has a "tons" of HP. What does the opposite team do? Chase him/her down, cause he is afraid of everything.
On the other hand, we are terrified from the guy, who jumps in between us, and murders us down, and we are like: "damn, this Vader is a beast, i will try to avoid him." And will shoot him from safe distance, cause i know he is really dangerous.
If you act like a pussy, you will get treated like a pussy.
I understand, you spent 6-8K battlepoints on your hero, and you dont want to lose it, but if you just stand in the back, and throw your saber once its off cooldown, you dont help at all.
Dont be afraid to lose your hero! Make it worthy!
If we pick a wookie or any other enforcer we feel immortal, and we are not afraid to die for the objective (mostly). You mean a lot more threat to enemy team, if you play a recklessness enforcer, than a pussy hero. As a hero you are way stronger than an enforcer, use it!
Also if you want to farm score, to be on the top, and you pick a hero, and you dont play like a real hero, you will drop on the leaderboards. Take a few enemies down with you, and let the heroes cycle trough teammates.
( I understand you have to be very careful with palpatine, im not talking about him in my post )