Imagine if the world today, somehow still ended up just as advanced and technological, still resorted to blades and medieval equivalent tools of war, you can come up with how technological and futuristic these weapons would be (as they probably wouldn't still be made of iron and steel) but ultimately, wars were still fought with the same melee dependent tactics and formations. As for related topical question... how would these weapons look and act, and do you see yourself being a more militaristic person because of it?