Well, if you don't like the storytelling part of this game, then you should look somewhere else. I too am not a big fan of lesbo content, yet I didn't find this disappointing by any means. Would I like it to have more sex scenes? Obviously yes! Would I like them at the expense of the story, which would pretty much put this game on pair with almost every other game on this site. No I would not!
The thing with this game is that it actually has a plausible plot, it's extremely well written and has a pretty realistic feel to it. This is what sets JOHN apart from the other 98% of nonsense stories around the forum.
Also this is most likely the game with the best 3d graphics around. Stopper not only takes time with the renders (you can see by the posing that he actually spends a great deal of time in making things next to perfection) but it shows clearly that he also must spend a good amount of time on post rendering editing to achieve the quality we can all see.
The only other developper on this site that I've seen that can actually be compared to Stopper (in terms of a VN with 3D art) is Phillygames, since his creations also have extremely quality renders and excellent plot. Other comparisons (and I've seen quite a few being made over the last 10 or so pages) IMHO make absolutely no sense since you're comparing Stoper's work with guys who clearly don't spend the same amount of time as he does in creating high quality renders and clearly also storywise are light years away from the quality Stoper has been delivering.
So, to sum it up, as you all know (or at least you should know by now), quality takes time. If you're not looking for quality, well there's no need to be disappointed as there's no short amount of other choices around this site.
