The Obsession With Possession
With Karma's new lore released, and having been heavily disappointed by it, I realized something about some of our most recent champions as well as ones who have received updates.

What do all of these champions have in common? Well it is quite simple. They all have some external force acting as their internal conscience or weapon
Swain has his demon-spirit, Varus is a darkin inhabiting two lovers, Zoe is inhabited by the Aspect of Twilight, Karma is now the Last Ai- an Avatar carrying the past incarnations of some priest, Kai'Sa has a voidling attached to her acting as a adaptive suit, and Kayn has Rhaast haunting his existence.
While these champions all have some pretty well-built stories (save Karma), it seems that as of recent, some of our most beloved champions need to be inhabited or possessed by some greater force in order to be great themselves. This trend started with Kayn, and has continued for a bit too long in my opinion. Not to mention that Irelia credits 'the spirit' with allowing her to manipulate her blades.
My question to Riot's lore team, is why have you allowed for so many champions, both new and old, to now have to rely on external forces in order to be powerful? Why has this trend been going on for so long? And why can't we have a new champion that's great for the sake of experience or challenge?
all get their powers from their weapon
all got their powers through another source of magic(granted Xerath&Yorick had powers before their transformation)