He would be an upgrade to Folk and Forbath for sure. He's been really good this year with the exception of the missed FG against Seattle...I would sign definitely sign him if I were Bill, but what do I know?
Folk is a known commodity with little variance. For the most part you know what you get with him. Kinda consistent under 40 yards, beyond it becomes a bit of a lottery.
McLaughlin is a completely unknown commodity with only a couple games played. There is no evidence he'd be an upgrade on anyone based on that sample size. He is the high variance choice that could be better but also a lot worse.
I am not sure I want to go with a high variance player into the playoffs. I'd rather know what I have and play around it.
I'd love to get him as an offseason signing into camp where you can really figure out how reliable he is while also evaluating how Ghost is doing coming back. That's where the high variance choice is perfect.
Just my two cents.