Oh no, I really love this game — especially the first part! It's just a little disappointing that the graphics seem like a step back compared to the original.
The graphics are pretty much the same. Most of what you're noticing is lighting problems and clothing options. Llama has addressed them all. I'm not sure if the version on here has all the patches, like Jessica's new outfit in the library, but they'll probably be in the next update.
It'll probably be more helpful if specifics were pointed out. Rather than generalized statements of discontent.
I'd also argue Sexbot has a very unique look and too many changes would change the entire feel of the game. I've seen other devs do that and they're not even the same game everyone fell in love with.