Wrath is probably my #2 expansion only behind Legion.
I rank expansions by how much fun I was having, how much I was playing, and evaluating the expansion within the context of it's own time period. Right now if you're a new player leveling a character through the Wrath zones or doing the TW raid/dungeons, they definitely show their age, but it's not really a reflection of what the expansion was for people in 2008 with everything that existed in that time.