Ok, a bit more analysis on this:
I'm probably going to take a wait-and-see attitude on this, but I'm going to say that it is a not-favorable wait-and-see attitude. That being said, I've got deep reservations about this:
(1) The best we can hope for is status quo, and the way this is being carried out reeks of it being a major devaluation.
(2) Operating with the presumption of it as a functional devaluation (it is stunningly rare to see a major "tune-up" [1] of a program without an attached devaluation), it is VERY disturbing to see the timing on this. The devaluation was set to be announced on August 31; there is presently an ongoing "buy points special" which expires on August 23. I cannot help but view the timing as suspect there, particularly since it is unlikely that this overhaul has NOT been in the works for at least a few weeks.
(3) Also operating with the presumption of a functional devaluation, Marketing really needs to rein in their dressing-up of these changes [2]. Calling this a "tune-up" of a program that I believe the vast majority of members would consider adequate-to-excellent (and which, speculation being what it is, will likely be a net loss for most or all members) is a classic case of "putting lipstick on a pig", as the phrase often goes, and it appears transparently so in light of other developments in the travel industry as of late (e.g. Delta's SkyMiles changes). The changes are likely to be unpleasant; saccharine-coating them in positive-sounding euphemisms is likely to make the more jaded of us ignore any positive elements of the change out of cynical experience.
I would further point out that, at least from my perspective, the program as it stands is extremely simple, straightforward, and accessible. From what little that can be gleaned from the documents we have seen, the changes do not seem set to improve it on these grounds (particularly considering the low cost of many "special train" coach awards) as awards will likely be more expensive in all but the cheapest cases (e.g. St. Louis-Alton). Yes, some of this may vary based on the nature of the new redemption costs...but experience elsewhere says that said costs will likely come out worse in all but a few cases. Eliminating blackout dates doesn't do much (blackouts were a marginal element of the program for the most part) while point expiry has mostly been a non-issue.
The credit cards likewise earn a wait-and-see attitude...there are too many terms and benefits to wonder about which may or may not apply. While I can say that I will almost assuredly be setting aside my present AGR card if/when it ceases to offer AGR points (or transferrable points), but beyond that I'm looking at this with trepidation in light of everything else going on.
[1] Based on the mentions of likely doubling-to-quadrupling of redemption prices (over on FT), a word other than "tune" is coming to mind to describe this. Were I to take my car in for a "tune up" and find that my fuel efficiency had dropped by this much the odds are that the mechanic and I would be meeting one another in court.
[2] Withdrawing "and getting better", as noted above, is a move in the right direction. Lord help me were I on the commission were I to hear of this as an "improvement"...let's just say that saying that in the face of a countervailing reality would be enough to cause me to burst out laughing from the dais.
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I will say that I don't expect the worst of FT's expectations to be borne out. What will probably happen is that, for example, advance-purchase Regional tickets will end up noticeably cheaper while last-minute tickets will end up noticeably more expensive. The net effect will be a loss, but I don't think it will necessarily be quite the massacre that everyone is expecting. Still...I'm expecting this to be bloody to the point that I would have preferred a non-trivial "straight" devaluation to the restructuring.