Season 3 will probably end the franchise, as it will cover the last bit of the light novels. We'll probably see if Yuuto and Haruka really get together, or if one of the other girls can manage to steal him way. They've come far, but we're not there quite yet.
At the very least, I hope we'll be largely devoid of the "Let's annoy our loving couple in any way possible by conveniently interrupting them in their private time" that annoyed me last season.