Skype group video chat needs to be free of charge
As Microsofts main consumer-facing communications tool Skype is lacking features that are free on competing platforms (Google Hangouts). As face-to-face communication on Mobile becomes more prevalent I could see this becoming a differentiating factor for communications tools such as Google Hangouts, and one that may drive consumers towards that platform.
That being said. I would love for free group video chat to come to Skype in the update that brings Skype to Outlook.com. It's not like Microsoft needs the revenue that that feature may bring in, and it would increase mindshare over the currently nascent Google Hangouts by a huge amount.