You've got to remember, yourself and a few other teams may be coming
just for the CoD4 competition, but there are also quite a few other teams who come for the whole LAN, for CoD 4
and CSS, or a mix of the above. A lot of the casual teams don't want to sit around for 4 hours playing through a round robin of matches. That's not to say your point is invalid or anything, just pointing out there's less serious players too

How the comps are being run has been quite a big discussion point amongst the competition team, though, so rest assured we're not just dismissing your, and everyone elses, suggestions.