I really try not to judge what people like, visually. Nothing I say is going to make any difference, and I’m not sure it should.
For me, having Canary in heels in the comics always felt wrong. She’s a good enough martial artist that she COULD wear heels (I walked the cobblestone streets of Bergen, Norway, with several tired and tipsy young women who never even stumbled despite very high heels). She COULD do it.
But it didn’t work for the character for me. I always figure that she wore them at one point in her career to honor her mom’s costume and then gave up on the idea as just being a bother.
But I don’t judge what people like for the most part, on costumes. My opinion is my own, based on my perception of the character.