He's not just an alien space parasite now, though -- he's also the incarnation of war itself.
No he's not. Or if he is, he's pathetic about it.
We know what Pantheon is, from Sol's lore. He's one of the celestial spirit things that captured Sol with a magic crown and makes them do their dirty work. So alien.
And from Pantheon's lore we know that he's a body hopper:
The Pantheon Aspect had obliterated his personality, memories and emotions. Atreus' flesh was nothing but a shell inhabited by the supernatural Aspect of War; his mortal soul had joined those of the ancestors in the celestial afterlife.
Meaning Atreus is dead and Pantheon is a space parasite.
And he's not even a good warrior really. We know that Sol is the reason that the Targonians expanded over the galaxy. So... I suppose Pantheon was twiddling his thumbs during the important fights. Which we even see in the lore. We get to watch Pantheon beat up some barbarians that have no means of hurting him now that he's superpowered (woo... fighting people that you're better than because your magic makes them not a threat. That's great. It's so fun to watch conflict with no actual stakes involved). Then when he actually has a difficult battle, he calls Sol to do everything. And gets blown up as an afterthought.
I don't want to see the other generic champions get changed. Vikings are awesome! They're way better than when Riot tries to take the concept and muck it about. I like Spartans, and knights, and vikings. Hell the reason why I started playing this game was my friend said "Hey, Dienekes, in this MOBA you can play a Spartan and kick ass, murdering monsters, mages, and particularly annoying squirrels." And I said "Sign me up!"
I want to play that. I've gotten to play that for years. Now they're going to take that away for the new vision of the game. When that new vision is just as silly and nonsensical as it has always been. Only now they're deleting the things I like and replacing them with this bitch they turned Pantheon into. Not a soldier who lived through the Agoge and represents the honor and brutality of one of the most interesting cultures in history. But some chump from outer space that gets monsters to do his dirty work.
It's a slap in the face.