Gotta say that I had never played VNs until I found out about them within just the last few months here on f95. So far I'm just a free-loader but I wouldn't mind throwing a few bucks at a good developer, and this is one I could definitely get behind (and probably will eventually).
Having gotten that out of the way, I have some ideas that I think are in the spirit of WTHI which I'd like to share. Of course the dev has his own ideas, but he did solicit plot-pacing information, so this is offered in the spirit of that request. It occurs to me that a lot of what I'm about to say may be to a great extent what the dev is already thinking about how he plans to proceed. If not, then more power to him.
One thing that a lot of these sorts of games have a hard time with is the balance of realism and realistic human relationships and jealousies on the one hand, and fulfilling the male player's desire for a harem on the other. I think that WTHI likely will and should fall a little more on the realism side by ultimately forcing a choice between the two sisters. Frankly, though I could be totally wrong, I just do not envision wild threesome fuckfests happening in this game. If it does turn out to be that type of game then that's fine too, but that just isn't where I see things going. Instead I think that Monica (and Zarah if you're into her, which I'm not) should be sort of a freebie, and she should basically end up having fun with the MC before essentially giving him her blessing to go on and pursue one of the daughters for an actual relationship. The critical choice then should be how far the player can get away with carrying the relationship with each sister, and how much content the player can tease out of each path, before either being forced to choose between the two or else maybe just screwing it all up and having a game over, as in, "You lose, you got neither daughter and also pissed off Monica.". Doing it this way gives the game built-in replayability because you're guaranteed at least two distinct endings (or three if you count the "game over").
The way I personally envision this choice proceeding is something like this:
Kate path: the MC brings Jenna out of her shell, helps her with self-esteem, and has some reasonably intimate fun in the process while ultimately fending off tit-hound losers that are after her and setting her up with a decent guy (maybe a friend of Kate's?). but his real attentions go to Kate as below.
Jenna path: the MC helps Kate with the social problems and bullies she's had to face and helps her realize that she's strong enough and beautiful enough that she doesn't have to hide behind her rough, trash-talking persona but can be more genuine. once she really understands this she can find a nice guy while the MC continues with Jenna as above.
So in each case what you've got is the MC helping both of the daughters with a sort of personal awakening and then pursuing the final path with just one of them while helping the other find a nice guy. This is not really NTR because the other guy isn't really a competitor ... instead he's just more of a minor character who happens to be the lucky beneficiary of the MC's help, and who the girl chooses only after the MC forecloses his own path with her (if you fuck up they both choose other guys!). But nothing prevents a lot of very intimate action developing with both sisters prior to the characters coming to terms with their feelings and relationships and this choice being made.
I have to say how great this game is so far in terms of using the porn stereotypes really well and with unusual sensitivity. For example the "corrupting-mentor" relationship the MC has with Jenna strikes just the right balance of being subtle and directive (and I also love how she helps him as a smart, Velma-like, sleuth figure), and the "pretend boyfriend turns real boyfriend" relationship he has (or will have) with Kate is also great. The "distract her" scene between the MC and Kate while working out was unquestionably one of the best pieces of writing I've ever seen in any of these games.
Keep up the great work.
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