The only other situation where I can see him staying is if we ended up in a Bears situation and finish 10-6 and no playoffs. That would be the bare minimum without playoffs. Anything less, he should be gone...and I've been a Rivera supporter.
The thing is...we are a playoff caliber team. Most of the loses the last couple of years have been close enough to tip towards a win...but have been squandered due to bad decisions both on the field and on the sideline. No more of that. I don't expect us to blow out teams, but those close games have to be wins next year.