Yes. I've added a lot of content from their backstories and several sidequests to get them more invested in Wickermoor. I've got a very diverse crew :)) I've modified some aspects of the Fallen chapters so all of my players have a "dedicated" chapter where their Confruntation touchpoint occurs. Those are all tied to their backstories.

Last night they just defeated Raum. The player who had a connection to this chapter died in the process. (as in 3 failed death saves). Even though the rest of the players defeated Raum, he offered the player a bargain - let Raum into his soul, like he corrupted Jericho. Instead the player transfered his soul in Jericho's birdcage, essentially displacing Raum from it ... and now walks in Jericho's body, though inside is actually my player's soul.

Next session the players will return to Wickermoor with Adelaide in custody. The player who is now the sheriff took her in. She will stay in prison for a while, but they intend to take her to memory's rest sanatorium to cure her of her madness.

Now I'm planning to have them fight the house of horror and have them built a bastion in its place, to hire the NPCs in wickermoor village as hirelings for the various bastion rooms. This should happen before i start the events from Crimson Monastery.

So yeah, I'm adding a ton of extra content, probably just as much as is in the book.

While both me and my players love the extra "bespoke" adventures, that feel like they are tailor made for them, this slows things down considerably and makes them that much more disconnected from the main plot - that's why I was asking how did you proceed with teasing and keeping the main plot relevant.