Here's the thing about those lines. They're necessary. "Oh but in the comics-" Yes. Those lines are not in the comics because the comics are drawings. 2D art. When you try to put that in a 3D space for film, it doesn't look right. If you were to do a literal build of a comic book suit you'd get this

BeatRushMetro

I'm going to be SO damn honest, I'm at a point where the panel lines complaint with superhero suit designs feels like a nit pick Like some people will see a really good suit but it's somehow "not good" because "there's panel lines" and I just roll my eyes atp