The rMB keyboard is not as bad as people make it out to be. You have to get used to it, but I can't speak for everyone obviously. I used it for 10 minutes in a best buy a while ago and typed any words that came to mind on a word document to see the results.
As time progressed I did get better. It is sleeker and the keys are bigger which is nice. Since it is a "pro" I would assume apple will be sure to please the Pro crowd and from what I gather a lot of pros are more worried about adapting rather than giving it a shot for the long term.
I for one am anxiously awaiting the rMBP to be released. I almost pulled the trigger for a rMB which actually is more than I need. However I am beginning to take up light photo work as a hobby and am currently using the 11" mba which at times is tough with the screen real estate. It would be nice for a thin 15" rMBP to use, along with the supposed OLED bar, and my personal request: bezels as small or close to small as the new Dell XPS line.
I can wait, I hate it, but I can wait, and if the rMBP doesn't impress I can always hope for a price drop on the rMB's and use the extra cash to buy an external monitor to pair it up.
As for the keyboard, I enjoyed it very much.