The most recent legendary I opened in a pack was Tess Greymane, and I've been enjoying watching Kibler play a Tesspionage deck, so I made one. The first non-aggro, fairly expensive, high quality deck I've made in a while, and I love it. I had to spend several thousand dust on a second Academic Espionage, two Fel'dorei Strider, and a Mossy Horror, and I crafted a Zilliax before I realized it's not in the latest version of Kibler's deck (though I can hardly feel bad about it, when the card is likely going to be very useful in a lot of decks) but it was very much worth it.
This is a fun deck to play, and takes a lot of thought to make decisions on how to use the random cards. I don't have to feel bad because it's not aggro, either! If I have enough time, I might end up climbing ladder more than usual. I'm at like rank 21, after climbing to 18 at the end of last month. I only climbed that high because I was playing Whizbang decks. The usual decks I play in ranked are crafted solely to finish quests as quickly as possible. (Quest to play beasts? Deck is only cheap beasts and card draw. There are no concessions made to improve win rate, though vomiting cheap cards still wins sometimes.) It's been pretty weird playing real decks, even Whizbang decks, and this Tesspionage deck is even weirder, but I like it.