Mercedes GP - Schumacher returns

Well after weeks of speculation the Mercedes GP team have finally announced Michael Schumacher's return to F1. Swopping a one time WDC for a 7 time WDC is quite a coup for Mercedes and will certainly leverage plenty of sponsorship in the Mercedes GP teams direction. The question will now clearly linger until the first race though, 'Has Schumacher still got it?' MS will turn 41 in January and has reportedly signed a 3 year deal with Mercedes which will take him just shy of his 44th birthday.
Nico Rosberg will now be the apprentice to what some argue is the best driver F1 has ever seen, but how will he feel about this when he clearly had ambitions to be the Mercedes No1 driver?
Ross Brawn will clearly be delighted at the prospect of working with Michael again in such a devestating partnership.

Schumacher's lingering decision has also held off Nick Heidfeld from signing for Sauber some i'm sure we will see him move quickly back in that direction now the deal is done.