I've been saying that Kamigawa started a trend of the storyline mattering more and more, a trend that would last for years. There was another trend starting around the same time though; the trend of WotC asking themselves "But what is we printed even more cards?"
See, back in the day we got 3 standard sets per year, and a Core set every other year, which left a gap in the schedule every non-Core year. In 2004 it was filled with the non-tournament Unhinged, in 2006 they made their first extra Standard legal set with Coldsnap, in 2008 they just made a 4 set block with Lorwyn/Shadowmoor, as well as the first From the Vault and Duel Decks... and so the curve trends upwards to today where a set that came out a month ago already feels like ancient history because we've gone through 2 spoiler seasons since it's release!
Ow, that was dangerously topical for this blog! Quickly, back to 2006! So... Coldsnap! What a weird set! Nowadays all the extra sets have clear audiences, Modern Horizons is for Modern, Vintage Masters is for Vintage, Conspiracy is for draft fans (give me Conspiracy 3 Wizards! Pleeeeeeease!), everything is for Commander... even the original "fourth set", Unhinged, had a clear audience in the people who had been asking for a second silver-bordered set ever since Unglued had come out. But a third Ice Age set? Who was asking for that? Reading through some of the articles announcing it you get the idea that this was more about WotC having an in-joke about a missing set than catering to a specific audience.
I'm not going to complain though! Bizarre though it may be, Coldsnap gave the storyline a unique opportunity to revisit a previous era and I'm totally there for it! As much as I love the way early Magic set jumped centuries or even millennia apart and thus created a long and varied timeline, it is a bit sad this meant settings and characters would never be used again (a few immortals here and there notwithstanding). So when, after years of seemingly treating continuity as something to be avoided since it would just lead to obsessive fans complaining about it, WotC suddenly did such a deep dive there was a lot of excitement! And also some anxiety from obsessive fans about possible continuity issues.
Well... let's see what they've made of it!