Yikes. That CO mileage expiration seems to be one of the worst around. Does NW have an expiration now also?
Is it possible to change an idine account registered? (i.e. move it from one airline to another, or perhaps change a joint credit card to be credited to another account?)
Is it still possible to transfer CO miles to Amtrak? That looks like it may be the best use of those. Especially since accoding to CO's rules, they could be removed. (No activity for a few years now.) Is CO actually cancelling accounts?