One of the things I've never cared all that much about is world firsts. To my way of thinking, I don't care when someone else kills a boss. I care when I kill it. But in talking about this topic on twitter this week, I've been presented with the argument that once upon a time, the world first races on various bosses really mattered to some people. They kept track of which guilds got the world first kill, watched the rivalries develop.
The argument is that the 10/25 split caused some difficulty, because it was hard to know which kill counted - does guild A killing, say, Heroic Rag on 10 man count more than guild B doing it on 25? I have no idea if that actually diluted the interest in world firsts and kill rivalries or not, but perhaps it did, and if it did, perhaps Mythic with its fixed raid size will once again give us this sense of interest as a community in who kills what first.
What do you think?