[citation][nom]Acert93[/nom]The problem was trying to make it a sporting event. Straight up DM would work. "Tag" and Team objective gameplay would also work wonderfully. I think this is an example of Valve thinking too hard. Maybe a portal sucked them out of the box?[/citation]
Exactly, Capture the Flag, King of the Hill, these were Mods. The original games (Quake, UT, etc..) were straight up deathmatch. True, deathmatch isn't exactly in the Portal storyline, but that doesn't mean people wouldn't want to play it for a little while. I guess the biggest problem would be how you keep all the portals straight with so many people running around shooting them.
Give the portal beam a little force, and you could knock people off their oh-so-carefully prepared trajectories, etc.. etc... You don't need guns to make it fun.