I enjoy novels where the main character has powers that completely separates him from normal people. I'm not talking like "Oh I have an attribute for all magic types, whereas best chances are an elf having 3 affinities." or "Oh I only have to imagine what magic I want to use then it happens, whereas other people have to chant." I mean like "Oh, you're a bodybuilder? Well I'm a wizard who can use magic, something that's never been heard of before."

Also like Sci-Fi, more specific battleships / spaceships. MC reincarnating as the system of a warship in space, as an example.