>>527361979
it's hard to make something yours when the art is made by someone else. you can get a pass if you have amazing gameplay but using generic assets makes it harder for your game to stand out.
you can polish the hell out of it but it'll look like generic unreal 3d game #500. if you make your own models as a programmer it's going to have to look like megaman legends or a psx horror game but worse.
even worse if they recognize one of your playable characters from another game.