Tory MP Stephen Crabb here says the United Kingdom is being "slowly dismembered and hollowed-out" by devolution. He also has a subtle dig at his own party's manifesto for May's election.
It is interesting, however, that his answer is not to roll back devolution - "Abolition of the devolved institutions is not currently saleable" - but more devolution. He advocates a law-making body for England, perhaps with its own First Minister.
Even if they don't all agree on the way forward, it seems all Conservatives can at least agree that some form of devolution is here to stay.