I think this is most evident in the choice of legendary creatures, many of which hit the top of EDHrec years ago. Krenko, Omnath, Sidisi, Nekuzar, Mizzix, etc. Along with Land Tax, Commandeer, and Chromatic Lantern, the set seems to reflect the era when Commander was no more than an annual product.

There are so many new legendary creatures and EDH-playable cards released nowadays that, at least in my area, nobody is playing those old decks anymore.