The standard was intermediate club bridge; not especially high. N will have 6♥ for the weak 2, and S will almost certainly have 3 for the raise, so on the second round E knows W is likely to be void.
The result was not a great success, as both 7♦ and 7NT are on (♠K is with N, and, if playing 7♦, ruffing the 3rd round of ♣ works too - though N is doubleton, S has ♦10). 6♠ makes too, but not 7 (N has K 10 3).
Any thoughts? In particular, please, your views on (1) X rather than 2♠ by E on first round, and (2) E's best action after W's 4♦?