Now that Orusuban is getting an ero animation I have start thinking back on the games. I would love to see Studio Ring remake them.
Could either be one for one individual remakes or perhaps find a way to blend all three together into single larger game. Bonus points if they were to make it possible to bed all six girls at once.
Shin Koihime had the recent remake in the form of Shin Koihime Kakumei though admittedly the Koihime series is far more popular and profitable.