Sorry if I sounded snappy :P
I've not really had that problem past 40.. the worst I've had is we spent an hour or so putting a party together, somebody dies on the way to camp and the whole party disbands. Now that's a timewaster. Another thing is that past 45 people can't seem to make up their mind which camp they want! Anyone else hate crawlers nest, secret room? That green light does my head in. Usually at 40 people have some clue of what they're doing. Usually.
So I'll agree with you, that if you're not concentrating properly, ie. your full attention isn't on the party (going AFK is fine if theres a reason) then you shouldn't be partying. Is that what you were trying to say?