Skype's reaction was not very specific yet, but we were told that improvements of the actual beta version of skype 5 for Mac OS X will follow. It's a beta, still - but the developers are observing the discussions and criticism on the public beta carefully.
We had a quite pleasant phone call with Skypes Public relations, telling us that there are improvements to come - there were no definite plans yet, but the sometimes harsh reviews of the Skype 5 for Mac-beta were observed closely.
Besides the critic via web, some more feedback was submitted to the developers through other channels, mostly corresponding to the points we made here. Of course, the sentence "It's a beta" was uttered, also the reply, that it's not really comforting to see the concepts of the Windows-version migrated to the Mac beta.
Aside from waiting and hoping for upcoming better versions, the collection and specification of improvements will be helpful for the developers. All critics are taken seriously at Skype, we were told.
Conclusion: great statement, now the actions should follow. Fortunately, that won't bee too difficult - for the main observations like waste of space and single window view can be issued quite easy. Specifications and explanations of issues can and should be made - we'll collect them here as well as in our facebook group and submit them to skype.