The Colonel 100 as a rare super-bot?

We know that bots are in the game and that they have (or will have in Portal) different "difficulty" levels.  As such, I feel it only natural and necessary that we have "The Colonel 100" in the game as a super-bot.  My thoughts would be to make him a rare spawn (1/5000 chance? not sure how rare to make him...) that could move around freely and would be the most "realistic" AI bot in terms of difficulty.  His only job would be to prioritize and destroy all the Nancies in the game...

I think he should be a loner, teamless killing machine bot, so either side could take him down (or try to...).  Perhaps he drops a special weapon in the match, or perhaps a permanent melee weapon, or a dogtag?  Regardless, it would be cool to see him in-game... or terrifying maybe.

DICE... please.