I'm neutral, so I can't really make a selection. I was interested in hearing more about Marathon, and now that I have, I personally feel whelmed and hesitant. I still wanna give the alpha an honest shot to see if anything clicks. But aside from the in your face art style and aesthetic, it sounds like a lot of the mechanics and core components are extremely familiar. The weapons, the abilities, the core game loop, everything.
So, if there were PvE only modes, I can't say it would entice me anymore at the moment. Because there's plenty of games available right now that have PvE experiences that are great and stand on their own. Much like there are extraction shooters that are great and stand on their own.
I look forward to checking out the alpha to come to my own conclusion.