Well you come back to the important point about these viewing orders is that it really depends on who is watching them.

Really the universal choice is Release Order. That is how everyone saw them and you can’t go wrong with that. Chronological is good for rewatches, to go back and see the whole picture.

But, if your person knows Darth Vader is Luke’s Father, but don’t know Anakin Skywalker is Darth Vader, then there may be some merit in watching it chronological. I’ve seen some pretty intense reactions from kids who watched Episode III and were shocked by Anakin’s turn.

I do remember reading someone who showed their kids the Clone Wars show before the OT (or maybe it just happened that way because it was on TV all the time, and they weren’t old enough to watch the movies yet). But seeing them fall in love with Anakin and Obi-Wan, seeing them as these heroes, made the twist in Empire that much harder for them.

If you’re wanting to get you’re kids into Star Wars at a young age, I can see the merit in introducing them with Clone Wars, then jumping to Episode IV, V, then back to III to see how Anakin fell, then coming back to VI.

So yeah, it depends on who you’re showing it to and how into Star Wars you think they might be.