It was a good experience for me as well, as i've never been part of playtesting on a game with a purpose in mind before. I had kinda wanted a job as a game playtester back in highschool as one of the paths i wanted to take after i graduated, but went down a different career instead. Needless to say, It was a interesting and fun experience.
And i fully understand your reasoning and intentions on putting a stop on the distribution. Inusuku is one of my favourite game developers on imouto focused porn games. It would definately suck if he got discouraged on making future games because of some random people on the internet(even with good intentions) distributed your work without your permission.
Also, this might kind of be unrelated, but i wonder if someone could ask the developer a way to obtain a updated english translated version of the game in the future if you've already bought from dlsite ENG? It would kind of suck if i wanted the new updates on the game, and bought the dlsite eng version, then having no other way on getting a updated english translated version other than buying from another source, like kagura games again(other than pirating, but i'd prefer not to do that if possible). I wouldn't mind supporting the developer, but it feels a bit cheap to have to buy the game twice just to obtain a more recent version of the same game.
All in all, thanks for all the fun, and best of luck with your translation efforts in the future.