If your argument for Garen is that "he's just a worse version of Darius", then he probably doesn't need a rework, you just need to learn differences in champion kits.
Ashe is fine right now as far as I can tell, and the "I only need one shot" quote is just a flavor quote. If you're going to quote it and then make jokes about her Q, you should also look at her auto-attacks, her Volley, and so on.
Lucian is debatable, though; he has a solid kit, but like you said, proves to be difficult to balance.
Fiddlesticks, no comment, Riot's already looking at him.
Tryndamere doesn't necessarily need to be a teamfight champion, but he does need a rework.
Camille - really? A Champion who was released so recently? And your reason is her mobility? C'mon. (also, she's more a Slayer than a Tank.)
And Galio doesn't need his rework reverted, you just need to accept change.