I think I can sum up Ilthilior's opinion in the one sentence I told Thoros last night.
At the end of the day, I don't select who I fight, I just do.
Also it's fun fighting against Glom for whatever reason.
For some reason I think that the ur'Guard actually started doing it in groups of 5 or 8 when we had the numbers (and we do a lot) but I might be mistaken. The term loosely filtered from just ur'Guard to Magnagora.
I am terrible with sweets. @Esca tells me to savor them, after I've already chomped them down. I guess that's a sort of character secret…