When fit, in form, and given decent ball he's still England's best Outside-Half. Cipriani is clearly the coming man, but he doesn't have the experience of Wilkinson, and I'm not sure he is yet able to control a game completely from 10. Equally, there are a number of other contenders (Lamb, Geraghty, Hodgson) who should provide the necessary competition for the jersey. Wilkinson is still a relatively young man, and he can definitely come back. He provides numerous options and I could see England in the future with a back-line of:
9. Care/Foden
10. Wilkinson/Cipriani
11. Simpson-Daniel
12. Geraghty/Barkley/Wilkinson
13. Noon
14. Sackey
15. Cipriani/Lewsey
Firstly the pack need to start winning quality (Quick!!) ball and allow the Outside-Half, whoever that is, to play on the front foot. Dismiss Wilkinson at your peril, he is a proven, world-class player who can still play international rugby for another 3 or 4 years.