Nah. Goofs are a lot more fun to catch on your own without any kind of immediate assistance meant to make it easier to spot them. Like this movie I saw, The Last Kung Fu Monk, in one part you see a close up of the protagonist’s head, and you can see a big white bulging zit on the back of his neck. So either nobody caught that, or they just weren’t bothered to edit it out. Lol. I’m also pretty good at noticing errors like pieces of clothing all brand new after a person had them torn or soaked with blood, or wounds that constantly appear and disappear. It’s funny, but it doesn’t fulfill me more than that to notice, so I can’t say I’d sit through a whole movie in slow motion in order to purposely catch such things. Anyways, being a horror fan, you start getting used to goods. XD
But if it did have to mean something for me, I’d be much more proud of my nerd factor in noticing them on my own.
Like in Jaws at the end, the shark has a propane tank stuck on the left side of its mouth, and then the guy shoots the tank, essentially mortally wounding, perhaps killing the shark…
In the second movie, it’s indicated that the killing shark is the same one as before by the nasty scar it has on its face from the explosion…except the scar is on the right side of its face, and not the left, where the tank blew up in the first movie…I thought that was hilarious. So while I wouldn’t do it myself, I do find some type of appreciation for people who would go that extra mile in order to spot errors and goofs in a movie.