I would think..... like, I haven't ever seen this. But the thing that makes comics work, like the whole thing that the medium revolves around, is that readers are in control of the timing. That when you look at a thing, the thing happens, and that's where the magic is; the whole challenge of creating comics is manipulating the order and speed that readers look at each panel and thus the order and speed that things happen in. The perfect illusion is when you get so caught up that you keep looking at new panels as fast as you can, eager to make the next thing happen.
You look at a panel with a slamming door, and the thing happens -- the slam is immediate in your mind. That's not magical in and of itself -- but it does mean that anyone adding a superficial sound is going to have a difficult time matching that immediacy perfectly, and when it doesn't match, it pulls you out of the illusion that these things are actually happening. You're just looking at pictures now, hearing some ambient sounds.
So it'd be tough to make it actually improve the comic, it seems like, to me? The best you could hope for would be unobtrusive.
The other thing is like.... if I'm gonna turn off my music or put in my headphones to watch a video, I'm doing it for 10-30 minutes of solid entertainment. I don't know that a couple of comic pages would be worth the trouble. It's already hard to get people to read a comic..... adding that extra "p.s. you gotta be in a position where you can listen to sound and also be a hearing person to fully appreciate it" is just another thing in the way.
