No shock Vettel is leaving. He has no faith in Renault and Red Bull's design and driver program is about youth. Christian Horner flat out said they would not hire Alonso.
Kyvat and Ricciardo are the perfect pair. Daniel if he is successful will be gone in 3-5 years. Thats the Red Bull model as evidenced in Toro Rosso.
Kimi is lack luster and over paid. Massa was a better investment in terms of points and salary. The cool factor for Kimi is long gone and frankly he should go along with Alonso.
Kimi is severely over rated and has a title handed to him by Mclaren. I like Kimi but he is not in the same league as Alonso. Not many are of course.
Nice summary of today's big driver news here:
http://www.bbc.com/sport/0/formula1/29487931