I'm sure that some employees of Microsoft are watching this forum. So they know our reactions.
If the current standing of the WDP would remain till the Beta, I think more people that are already haters of the Metro would further be upset and lose enthusiasm with Windows 8. To some people, they are going backwards with this thing. Going retro with Metro that is.
However, let us see what a "non-Metro" Windows 8 will perform. I am not yet giving it all a thumbs downs since the "non-Metro" Windows 8 does have advantages over Windows 7. We will know more in weeks to come.
If there are Microsoft employees here, they would be busy boosting Win8. Their paychecks depend on it. And they would not dare open their mouths in any meetings. They would not want to be labelled as "not team players". You underestimate the power of groupthink.
As I said in another thread, Microsoft may decide to make the Metro interface optional for the "Enterprise" or "Professional" version of Win8 where it may ask anywhere between $199 to $349 for a license. This again hinges on how they see the enterprise sales going.
The decision to have the Metro-style "Start Screen" on without the capability of switching it off seems to have been "hard-coded" because of the announcements of the Microsoft App store.
Microsoft is not going to start an app store for an interface that it intends to make optional and which most users would not choose to enable. In fact, during the App Store announcements, MS discussed about the possibility of allowing enterprises to distribute "company apps" by specific workarounds (they would not be visible to the public).
So, I do not expect any changes in the beta. If you do, you are an optimist.
Microsoft may have a plan B. If there is resistance to Win8, it may come out with Win7 "Second Edition" where it may put in some of the Win8 improvements (minor as they are) and sell a few more licenses this way. Or it would simply continue selling Win7 licenses as it happened with WinXP. Distributors would allow users to select either Win8 or Win7 (and the money goes to MS anyway). From the purely commercial point of view, Microsoft is covered either way.
Where Microsoft may really get hurt is perception among power users. It would not notice at first. This would take some time to bite. When many, including me, abandon Windows for something else, this decision would only be noticed if through our efforts more and more average users start abandoning Windows. At some point, this may get to be a real threat. For example, t
he Vista debacle cost Microsoft somewhere between 3-5% of global market share. It still has a very high marketshare (just above 90%), but this loss had an effect. The failure of the Metro "Start Screen" may open the way for Apple in the enterprise. Who knows, it is difficult to tell.
In summary,
Microsoft believes that the upside of new Start Screen is good and the downside (some grumbling power users) not that negative. So, do not expect any changes. I would be surprised if there are any.