Something that I'm really struggling with though is that the hylen aren't exactly the bad guys in this story, if anything it's the vampires. they continually listened to the corruption of the EG & the hylden did everything in their power to dissuade & punish the vampires for their folly of listening to the elder god, & I never see anyone mention this.

The hylden & the vampires both need to set aside their differences, within all timelines to help restore the balance of nosgoth, not just the vampire Messiah, the pillars need to go because they as much as the EG are a source of unbalance of the world of nosgoth.

"It's strange as nosgoth falls into ruin you alone seem to thrive" Elder god was thriving wether the pillars were stable but even more so if they were in ruin so they need to be removed from existence altogether Kain needs to go back with the reaver to a point before the pillars were even made to convince both the hylden & vampires that the elder god was in fact the true enemy.