Anyhow, I'd like to think that 5E isn't entirely about business. Sure, that is always the driver behind the decisions made by large corporations, but I would hope that someone like Mike Mearls, while by necessity having one foot in the economic pond, is focusing his creative energy towards evolving the game that is D&D.
Oh, I'm not saying that Mearls should be worried about the business aspect of timing. But someone is worrying about it, and their decisions affect Mearls' ability to put out a good game.
Now, maybe I'm wrong about waiting until the recovery starts, but what if I'm correct, but no one considers that? Then we are most likely to get one of the three things:
1. They start it without regards to this and launch before the recovery. It's a great system! But then it doesn't sell very well, because people aren't buying games. Mixed signals. Or, It's not such a great system. The combined weight of customers with no money and a not very compelling product sinks the franchise entirely.
2. They wait. The economy recovers. Some suit at Hasbro says, "Put out a new edition within 12 months." Make your best guess on amount of playtesting and general quality control in this scenario.
3. They get lucky. They start working on it based on the list of other concerns. And it happens to be ready to release when right as the economy turns around. It sells like hotcakes. Everyone thinks the marketing team prints money. And the business guy who should have been considering this stuff looks like a winner! Everything is roses right now. 5 years later? Not so sure.
Not that those are all bad, but the game will get made based partially on business decisions whether we want it or not. I'd rather those decision not be allowed to adversely affect quality anymore than necessary.
The micro changes, followed by a consolidated edition, would be a good way to do what I said, given those business concerns. I still think a very open and open-ended "Beta" effort during a down time would be a good investment in both quality and goodwill, if they have the funds to float such a design without a set delivery date.