Hodgson can hardly have planned for the emergence of players like Vardy, Dier, Rashford and Delle Ali two years ago.
He's got one of the youngest squads in the Euros (Not that I give a shit about that, or think it's laudable or interesting or relevant) and he has picked a 23 that most people approve of; there's been no really weird, controversial or glaring omissions (or inclusions), bar the usual argument of certain 'favoured' players being a certainty despite lack of form/ fitness/ whatever (Henderson, Sturridge, Wilshere, Rooney)
But he should certainly have a fixed idea of what formation and tactics he wants to employ, and have the correct personnel to make it work
That's what the problem could well be. Because it usually is.