I'm all for the continuity argument and in particular the 3 year minimum.
I thought the same about Rex after year one but by the end of year two it was obvious to me that it was time to move on and I'm glad we did so I don't see 3 year minimum as a hard and fast rule.
I think the "fire everyone now" crew have some legit concerns/complaints, but breaking the drought, the play of the defense, my belief that the QB is still a complete unknown and where we're at wrt to draft picks and cap space is enough for me to give McBeane more time.
If at this time next year the offense is as inept as it is right now, I would support pulling the plug mid-season and starting over, but that sets us back another 1-3 years and I hope it doesn't come to that.