NS was one of the first H-games I ever played, and that was a long time ago. It was one of the games that led me here.
It's always been one of those games that really felt more like an actual game, rather than an H-game. The gameplay was solid but the hentai was.... well it always felt like it was mostly the same animation with different enemies. Regardless, I played it more for the gameplay, not the hentai, but it was a rare game to mix both at that time in my life.
I honestly would like to see what all is in NS2. I never committed to playing the game a whole lot, mostly because I was unfinished and was hoping it would be finished one day, and then I just never really played much of it over the years because I eventually figured it would never be finished. Just another abandoned H-game like so many others.
Regardless, I'd play it again. About the only thing I'd make a request for is the ability to save my progress. Any H-game worth its salt lets you at least save where you want so you can view the scenes you want, and nowadays most include a gallery or some sort of extra room where you can spawn whatever monster you want. And that's also why I never really played much of NS2 much back in the day.... because I'd always have to start from the beginning.