In my opinion every unit performed well and it was the mix of troops that made it easy for me to react to the the different opponents and scenarios. Alarielle was doing great, because of here healing and the possibility to get a treelord for free.
Maybe the well balanced list and playing without a batallion that can do some special kind of things was the reason why I lost the last game, where I could have needed some special abilities. But the winner with daughters of khaine played also wihout a batallion.
I just prefer having more models on the table instead of a batallion. I would take exact the same army list again, but would learn the different spells from the realm magic, so I can just use them more effectively,