IMO The Shadows were absolutely amazing and Hank Marvin was truly inspirational to a generation of guitarists, among whom Eric Clapton, Tony Iommi, Andy Summers, Syd Barrett, George Harrison, David Gilmour, Brian May, Mark Knopfler, Peter Frampton, Steve Howe, Roy Wood,Pete Townshend, Ritchie Blackmore and Jeff Beck all cite him as an influence. Now I don't know about you, but I reckon if someone can influence a list of influential guitarists like that, they must be doing something right.
It never ceases to amaze me the amount of guitarists who try to emulate Hank Marvin's sound too.
Oh, and his name is also a phrase used to tell everyone how hungry you are. Now if that isn't a legacy to live up to, then nothing is!