There's another thing:At this rate,when will the VN ever finish? 10 years? 20? Humanity will spread to other galaxies and this game will still be in development.
Honestly,if the game became open source/publicly available for development,it would almost reach a coherent conclusion within 2-3 years (like CoC,but that game was ruined because one of the devs threw a hissy fit). If the dev ever drops it completely,I'd say the community,if they're willing and have the rights to do so,should take up the mantle and finish this. It would be a shame to lose something like this.
Then again,it isn't really a guarantee the community will finish it or do that much of a better job,although at least they'd be transparent about the development. Ah,the trappings of Eroge game development.
On another note,why does the MC's fun stick look like it came out of a PS1? It's quite low quality,I gotta say,it ruins my immersion.