My opinion about metagames: I like ones that have lesser predictability and more variety. The reason why is that it shows you more skills to involve when players build decks. A very predictable 'Rock-Paper-Scissors' meta is rather boring for me to watch, and the amount of deck-building skill is too much based on a simpler countering ring to guide you.
To me, I look at the results of tournaments as much more skillful just after a shift in the meta occurs - whether it be a brand new expansion just coming out, and/or past sets rotating out. I've looked much more forward to the results of next regional standard format tournaments than even the World Championships right now, as the Worlds usually have a mature metagame to deal with in the first place.