I'm extremely skeptical, actually outright pessimistic.
Shooters have been hijacked for a long, long time, while it's nice seeing them target a niche of gamers who've been without something, I also worry those same gamers will be "What the hell? These n00bs won't even play without healers!? Where the hell are they getting the idea of such a specific setup all the time!?". If it's a coop game, well, complacent gamer syndrome from stop having fun crowd, meh, I'm pessimistic.
Big time.
Because the genre has been hijacked for so long, it's kind of sad. First vehackles auto-winning for a long time(think undodgable tank shell hitting for 400 damage when your max health/armor is only 199/150, yeah...), then course we had lost coopertive for a long time, only serious sam really allowed it(even serious sam 2 fails coop, though serious sam 3 does really well with it). It's just I almost expect them to make modern mistakes in there, or even just force the dreaded unholy trinity in there. I'm pessimistic, and really don't blame me.
When we were cursed with moments like this;
https://www.youtube.com/watch?v=qnn4bG1tj-E for a long time and then generally the same thing for a LONG time that wasn't fun, it's hard NOT to be pessimistic.