Just how much of a "big deal" was Fires of Heaven back in the day?

[Safon]

I read an offhand comment about them in RnF today, and seem to recall hearing the name elsewhere on these forums as well. Were they some legendary guild during live? Anyone got a quick history lesson on what they did and why they were so famous?

It's interesting how a guild's name can live on in fame or infamy, I kinda miss having IB around. As a newb here they held a certain lofty image. Reminded me of my server's elite on live.

Anyways just curious about what history throughout live I missed (pre PoP, before the game died)