Right now with this coming update choosing to go to Brenda's is still mandatory for trifecta, but a new sub-path was added to it if you go to Brenda you can still choose a waifu. Choosing Melissa is also mandatory since I wanted to avoid making people do this for each girl. In short, Brenda's place, automatically sent back home, choose Melissa in order to not break this setup, and this unlocks the super-sub MC. I'm sure you can figure out what comes next once you unlock said content at the end of the update. As far as the trifecta at home being a thing, it's going to be next to impossible because it was meant to be a split path, and the content happens at Brenda's place, sadly. I was forced to rework the trans-only path since people didn't like the idea of a point system and the many saves required or the need to replay 100 times, tears everywhere. So, I removed the points, and am trying to bring both worlds together, slowly, but surely. So... No trifecta unlock at home, not unless a complete reword is done. Maybe one day, idk, can't promise anything. Not with how busy my work schedule is. Also, you are one of the very few people who actually understood the plot, my congrats to you.