I'll acknowledge, I'm one of those who did not make much use of Conqueror because of the raider story (just as I've never played through NW as a raider). I'm the idealist who happily works with Preston as General of the Minutemen, loves working with the Railroad, and wants to redeem both the Brotherhood and the Institute, not destroy either of them. I've yet to find the right combination of mods to get things to turn out just how I want them.
I'm sure that idealism is part of why I enjoy the SS2 story so much, and colors my hopes and speculation for how Ch. 3 will wrap it up. I'm really hoping to see all of the references to space/the moon in the Magnusson storyline pay off well (I always felt the teases in vanilla FO4 regarding the space program were wasted). Even if they aren't able to include everything I hope for in Ch. 3, I have every confidence that I will enjoy the story, and am looking forward to the expanded replayability that Kinggath has mentioned. I also REALLY hope to see more content from add-on packs authors, both familiar and new; even if I do eventually get around to making plots (and other modding) myself, I truly enjoy seeing what the add-on authors add to my game. I use nearly all of the add-on packs available in every playthrough, and as a result I have a wonderfully diverse "empire" of settlements.
All of that said, if Kinggath does get his dream of finishing the Conqueror story in SS2 realized, I will absolutely play that through to see that ending as well. In the bit that I did play in SS1, I did find some of the characters engaging and interesting, it just wasn't my preferred way of playing FO4.