Some players sometimes get into a bit of a rut, always playing similar or essentially the same characters. While this is a personal choice, it can be fun to mix things up a bit more, and move out of your comfort zone when creating a new character. Choosing a character very different from what you are used to playing can provide interesting roleplaying challenges and also provide new experiences and skills to expand your style.
So if you always play a fighter, or a wizard, think about switching it up and playing a type of character that previously you'd never considered. You might like it!
Commentary by memnarch (who has not seen the movie)
Oh hey, almost the same idea I had; "Oh, cool!" indeed!
And that's pretty considerate of Rose. I think that Finn being a suspect traitor is definitely in the cards still. A known traitor likely wouldn't get a gentle trolley ride, while someone who isn't could turn traitor due to being a roughly handled suspect. Admittedly, this is probably just way overthinking the decisions for the scene, but it's fun to think about. Practically, I suspect that this was an easier action to fit in for the actors on what's likely all green screen.
Rose: The shock prod jolt makes the target’s muscles contract violently. Finn threw himself backwards. No recoil.
Edgar: Oh, cool!
Rose: It’s really fun to go a bit wild!
Rose: All the times you told me to loosen up a bit, Pete... I think you were on to something.
Rose: Sometimes, the only way to stay sane is to go a little crazy.
Rose: All right. While he’s out, I load Finn onto a trolley.
GM: <roll> Finn comes to a few minutes later, but is still partly paralysed.
Finn: Wha... What happened?
Rey: Ben overcompensated again.
Admiral Holdo: At least this time he didn’t disappear for two years.