To be honest, the game just works as it is.
The aesthetics of PV is excellent and the story is fun. Some games have great character design and rendering, but the environment or game dynamics is awful. Some games have great dynamics and story even, but have poor design.
The story and the relationship development is executed rather well. It has humour, thought provoking parts and obviously some hot action.
In the way of future development, I fully trust the dev.
For improvements, I suggest more choices in dialogues and some audio for the h scenes. I'm seriously rooting for MC and Ophelia. It'd nice if they went on a nice picnic and had a food convo followed by some action