This is good. Like real good. It has engaging game mechanics, humor, different art for all different girls and positions and once you beat it, you get a replay function for all the combinations you missed.
If there is too much budget one day, this should definitly be remastered and expanded for newer audiences shying away from the flash player.
The drawbacks are mostly interface issues and quality of life stuff, like zooming, management of the girls, scrolling, misleading girl preference descriptions, small buttons and maybe the real time aspect.