Everyone has an opinion, no one knows what will really sell once it's out there. I know advice is a dime a dozen but I put my rejections away for posterity and try (I'm not perfect, either) to focus on the people who say they love my writing (it's not common, but it happens, often after a disproportionate number of disconcerting comments and form rejections). That's who I'm ultimately writing for aside from myself, of course. Have faith in your vision, revise more only if you feel it's right for the work. Best of luck.