Hope to see some fine cricket in the form of Ashes Test series, have seen too much T20. we all need some break and must see Test that is proper form of cricket.
England badly needs him to strengthen their batting and bowling lineup. Apart from Root and Anderson, none of the other England bowlers are consistent against India. He is not included in the squad for the Ashes, however if he returns for the one-off test against India then it will be a huge boost for England. Honestly, without Stokes England doesn't have much of a chance against India. They have the home advantage, but even that was not enough to prevent India from taking a 2-1 lead last time.
Stokes is a really important player for England regardless of the situation. He can turn a match on its head at any given time. He is also a class all-rounder. So he's basically the Shakib Al Hasan of England. And if England wants to even have a chance against India they do be needing stocks in their squad. Though he has been away for a long time I think him being in the squad will help a lot as he can do things almost no other player can.