Honestly the only content change I'd want is another female character to breed with the others so those playing as Mamui won't have to aim for the Kamuisexuals, the children, or Zero to get all the kids. Seems kind of unfair, but I'm not sure how much of the source code they can change so... Yeah. Likely not going to happen.
Also is it unfortunate there are only two options for those swinging the other way with said gender preference being game locked? Sure, but give it time. Like with every social issue it being legalized in a country doesn't mean change happens overnight. It's still progress nonetheless and baby steps generally mean less backlash. And that's just taking the recent debates in the states into consideration. It is still, after all, a Japanese game.
As for skinship... Honestly I hope they keep it with the lewdness in tact. These lines are absolutely hilarious to read at their 'worst' and downright adorable at best. Granted the latter is significantly less common.