Old topic tho. But I'm more convinced that Rogue should get Fighting Style after Arcana Released when all casters now have the access to Fireball.
Why can't a underpowered non-magic martial class just get some small buffs to make their hard life a little bit better?
There were people who told me Rogue getting FS would be somehow so unbalanced and somehow flavor breaking before 5.5e was released. Now I believe that's all true BS.
I also don't see how a Rogue with TWF or Archery could be flavor-breaking. The Swashbuckler was described as the best dueler while it has no access to Dueling. I really don't see how it can be unbalanced.
Heck, making Rogue stays where it is now feels more unbalanced to me.