I've read them both ways...Publication Way the first time growing up, Chronologicaly the second time last year. I think it makes (to me at least) a lot more sense to do it Chronologically
Part of the thing with LWW is that it introduces the world of Narnia in a very natural fashion; as the characters discover Narnia so do the readers simultaneously. In that way I think it's a better introduction to the series than TMN which to a certain extent assumes you know something about Narnia.
But of course when re-reading them it does make a lot of sense to do it chronologically now that the reader has the big picture.
That's part of the problem with the SW prequels I think -- the way Lucas set up and structured them, it takes for granted that you've seen the OT. Maybe not intentionally, but that's how it turned out. For instance, TPM really has no setup of the Jedi or the Force, whereas that is all explained in the middle of the series, ANH. If one were to watch the six chronologically, I daresay a first-time viewer wouldn't get it initially, having to pick up on everything by context, and from their perspective the whole Force thing isn't properly introduced until the 4th movie.