Loved Temple. Players were scarce when I played it - I played the whole party of eight characters. That was a silly attempt at gaming and the game quickly fell apart, believe it or not.
When I ran it, years later, it was the beginning of the most satisfying game campaign I ever had. The characters grew and changed through their interactions with the townsfolk, the brutal trial-by-fire of the moathouse, and their exploration of the countryside (lots of side quests thrown in for good measure).
When they got into the temple proper and started to realize the scope of the thing, I could see it dawning on them. After that first foray, they headed back to town and bought tents, blankets, etc., and moved in to the dungeon. It was the first time any of the players had thought about such a thing, and for some reason it was a transformative experience.
More character growth in the behind-enemy-lines atmosphere as they lived in the dungeon for what must have been months. They set up secret places to hole up, spied on the bad guys, used the priests' nature against them, dressed up as followers, formulated plans by candlelight, and executed some pretty manuevers against those elementals.
The party made a name for itself during that time, which made our next mega-module (Egg of the Phoenix) that much more interesting as they started to hobnob with the upper-crust.
Sure, Temple (and certainly Egg of the Phoenix) was a flawed creation, but it was fun. And for us, that's what it was all about.