I think the problem with story progressing is that if I remember correctly someone posted when he asked L&P this question, he said he wanted to progress further in every update. Now problem is since updates take so long to come out and he wants to progress further in every update he does, things aren't making much sense story-wise anymore.
If updates would have been released in normal time & not taking this long, story progress would be making more sense like it was in the start. But now due to pressure from people who are fans of certain characters, and L&P trying to please every category crowd, of course thing are going to get jumbled up. You cannot please everyone while making sense of the progressing of the story, it just doesn't work that way.
Also, what L&P would do is to include Sophia in every update, she is the main protagonist of the story. Not having her in updates makes no sense IMO. She can be included say in one scene, but the other scene could be of someone else if he doesn't want to cut content and release them separately just for milking purposes.
I think even if we follow just Sophia's story, it will take at least 7-8 years till her part of the story is completed. So that is a lot of content just for her, even if we cut all the other characters. There is no need to add others just to stretch the game, as we have years and years of content just for Sophia alone.
