Video and Phone calls though

I just noticed the ability do video calling/ calls though with skype which is great but one small thing that really annoyed me is how the messaging system on has slightly changed. You were previously able to switch between facebook, messenger and so forth by using the two arrows at the bottom of the screen that are also present in windows phone messaging hub. These have been replaced with 3 horizontal dots at the top of the screen, not even the vertical dots found in windows phone. I guess what i am getting at is it annoys me that both windows phone, windows 8 and metro are meant to use the same or very similar design philosophies but they very rarely implement these small things across platforms which would gives a sense of polish.