Heck -- this is my argument for the "bathing suit" costume -- that costume is all about sex, sexual power, sexual defiance, body freedom and absence of shame. Of course it's not "practical;" no superhero costume is. It's a symbol of something else. Thus, the constant need to modify it, to make it battle-ready, to make it "practical" rather defeats the whole purpose of the original costume. This was, originally, a character that was full of fun and light; who saw crime fighting as an adventure; who had no shame about her body; who was a skilled enough athlete and fighter she'd never need armor in the first place (and while she used a sword here and there over her first few decades, it was rare with her, because really, with her power and speed, wouldn't that just be cheating? Where would the fun, and self-betterment be in that?).
Without the sex, gender and love stuff in Wonder Woman, you're left with, essentially Xena-lite or the DC version of
Lady Sif; a generic warrior maiden who doesn't represent all that much except strength through war, honor through violence, victory by the blade of a sword.