I'm very picky when it comes to games with NTR and incest, the story has to be well thought out, written simply with more dialogue/interaction between the characters than dream/thought sequences, easy to play different paths and retain some IRL credibility. IMO 60% is story for immersion, 30% is CG for fappability and 10% coding for gameplay. This one has a great story with some of the best CGs around. The downside is that the script should be refined and the coding lacks in places. Nothing that the dev cannot fix and I can see it getting better over the different versions. Saddog has shown he can make a good game with the Legacy so this is one to watch. If it goes in the right direction it will rank with the best.
Edit: 25 Feb 2018.
What a mess this has become. From the initial demo to v0.3 it has turned on its head. The story has gone completely illogical and unbelievable and the game mechanics are all over the place. The only saving grace are the very nice renders. Dev should get a writer and coder to put some order in this chaos.
Edit April 2021.
The game has improved and loose ends tied. It looks dated now. Play for Nicole, but play the Mod, it's a better version.