Obviously Skype is released but not well integrated with the rest of Microsoft's suite. It can be far far more and better integrated than it is right now.

Please no.

If that would kill Skype in Linux, it would cut me off my colleagues who use it in Windows.

Skype has been progressively getting worse and worse with each recent release anyway. I had to have my mom figure out Google Hangout recently to video chat with her grandson as Skype has become totally unusable for video on my devices. With every release, more stuff that used to work starts failing.

I don't think its an either/or situation. You might have less integration but not less than you have today.