Depends on what you're aiming for really, high lewd fame unlocks more sex encounters on the area you're on, if it's higher then your brave fame you get more bottom or sub oriented content, if your brave fame is higher you get more top and dom oriented content, but other than that there's no problems with having a high lewd fame, the game doesn't punish you for wanting to be a slut, unless you count having random characters treat you as a slut as punishment but the main characters will treat you respectfully doesn't matter which fame is higher