>>149216789
But to speak more of good ideas, lets talk about the speed lines, the oh so distinctive feature of manga, speed lines everywhere.

Are they an idiosyncratic choice on manga's part? Do manga artists draw them just for the heck of it? No, they are there because they communicate movemen. Something which superhero comics feature an absolute abundance of, but who, for no discernable reason, choose to not draw speed lines.

On the left is a typical superhero comic, as you can see, there are not speed lines, therefore there is no sense of motion. On the right is a manga inspired western comic, it features speed lines, it looks good.

Speed lines are not a stylistic choice unique to manga, they are a good idea, and arguably the only decent way of conveying motion.
You must use speed lines if you are a comic artist, this is non negotiable.