I think right now, the biggest issue people seem to be having is the sis/uncle scene, which surprises me as I thought it was a good way to go, that being said, there was something planned for Mother which wasn't to dissimilar and peoples hate for the sis/uncle scene is really making me rethink that scene.
Hey PingPanda, remember that it is impossible please ALL the people. It is your game after all.
Personally I haven't find the sis/uncle scene but here it is considered NTR by a lot of people. It is probably the most controversial content here and people are very passionate about it (even too much). My personal suggestion is to maintain these scenes avoidable. You can probably add a question at the start of the game and create a filter ntr on/off. However it is only a suggestion. The game is yours and a lot of people love nts/don't mind.
Coming back at this release, it is a huge step in the right direction IMHO. You reintroduce the content/mechanics of the first game, the renders are nice and the fast travel fix one of the problems of the previous release.
At present the game it is a little grindy but it is probably due to the lack of content.
However you really must introduce more variety in the dialogs. You can keep the same renders but you can introduce a little changes in the dialogs. It is easy and improve a lot the game.
More importantly you should remember to show the development of the characters. So please remember to slightly change eh dialogs to reflect the increase in domination or love.
Something that you must probably check is the dialogue with little sis in the kitchen. After the first time that you agree to exchange money for favors the dialog doesn't change. IMHO the second time the dialogs should be different since you already have an agreement.
ie : take your money and remember that give me a favor.
Keep the good work
