[Fern]

I don't think changing the way DEF or RES work will do much good in general. I also want a Netflix account though.
 
But on a more serious note, Critical Hits being made to ignore armor as a whole would likely mean that guns would need a little something more going for them, since that was their core deal when it came to damage (before people discovered flat Power shenanigans, which as far as I understand Dev didn't really ever intend it to work that way to begin with.)
 
Guns in general are pretty jank, and I'm not talking about Magic Gunner specifically so much as the way firearms work mechanically. Though that's an entirely different beast of its own.
 
I do think people will still use Magic Gunner and the like, though, since realistically guns will still be useful in that regard. They'd just not be unique when it comes to the damage formula anymore.