1) I honestly would love NSFW moments in the game but you do whatever makes you most comfortable!!
2) My Character to me personally is just a nerdy 27 year old redheaded scientist lollll, Personality wise I imagine shes the Jealous type as when our character went out with Zu and his friends, I always made sure his attention was on me.
3) I think it all depends on what the creepy stuff entails.
4) I think adding options in the menu to make the words bigger and bolder would be a great option! I personally have trouble reading words in visual novels if they blend to much into the background/are wayyy too small.
Really looking forward to playing the full version!