Yeah, my big problems with CoD is the ultra-short lifespan (whoever shoots first wins) and the emphasis on leveling up. Halo added that shit in and it turned the series to hot garbage. I like the parkour stuff, even if the mechs feel like a gimmick more than anything (and yes, I know, someone will say that they're essential to the game, etc., I'm just saying, that's what it feels like).
The environment for shooters is usually so god damned toxic (remember, I used to play on X-Box Live) that I can't imagine ever wanting to subject myself to kids screaming in my ear, so maybe the focus on lone wolf-type stuff would be for the best.
My shooter history was Marathon (back when Bungie made Mac games <3), Goldeneye, Perfect Dark, Halo, Halo 2, Halo3, and Reach. I didn't really have a gaming-quality PC until the mid 00's. Everything else was a few weeks to a month of mild interest (like TF2, which I played on Consoles)... I wouldn't say I'm a fan of the genre to begin with, certain not what it's become.