Those are great ideas. The new game will actually not be this GTA-style one (though I may return to this one later) but it WILL involve sneaking around as a thief (with Metal Gear Solid types of guards/controls) so some of your suggestions may fit. Definitely agree about adding an unlockable all-nude mode and random BB conversations you can overhear (those should be fun to record.)
And you're welcome to do the Italian subtitles when it's all done--thanks for the offer!
Don't know the price yet--it will probably be cheaper for early adopters on Patreon, and slightly more after it's released, but definitely would keep it under $10.