I hate this new UI, is crap, just that.

If are less would have a minimalist mode but not, that crap software take the entire window.

Just to let you know that Skype added the so called "Compact Mode" to 4.0 beta 2. It seems you have overlooked this, in essence it makes Skype 4.0 behave as 3.x did while preserving all the benefits like the Conversations List and other UI improvements.

It doesnt matter how optimistic you are - a phone is a phone is a phone. Theres always going to be some idiot on the end of it or your teenage daughter ringing up drunk at 4 in the morning needing a lift.
Phones are like politics. We've been dreaming of honest, just leaders since time immemorial but no matter what you do you'll get a sinking feeling and a shrinking bank account.