As of now, no fire shows on your body when on fire. Doesnt this mod just use the third person model?

It does, but the fire is probably right behind the camera. Don't think that adding fire like that visible would be a good idea. Shouldn't the first person fire be visible?

The first person fire is, but it would be cool to look down and see your body on fire too. Perhaps configurable?

The fire is at a 90° angle to the camera. If you can see it, it's just a few mangled pixels.

I cant think of a good way to make this not look bad. The normal GUI fire is still there and IMO does a decent job.