Two things that currently seem a big of a hassle, are burning time and heart coin generation. As it is constantly having to click to advance the day kind of sucks. And not having a passive way to generate heart coins can be bothersome, as after a while the sex minigame feels like a chore due to having so much of the game center around such a simple repetitive task. I think after a certain love level it'd be better if a non-sexual interaction with them such as giving them a food item or kissing them generated a single heart coin, with some upgrades or abilities to increase the amount generated.
Also can we clean the rooms? Please? I feel like it'd be disgusting with jizz and wizz dried over all the furniture. Like, hell, make that part of the gameplay, making sure you don't make their rooms a mess and giving them furniture or something to increase their stats.