Oh dear. Another 50 page thread in the making...I understand what you are saying; I disagree. Show me.

A question: Have you read 'Hammerfast'?
When I read it, my immediate thought was: This is exactly the kind of thing that's been missing from WotC's adventure modules!
It's advertised as an 'adventure site' but it's really a lot closer to the way many of the 'classic' adventure modules have been presented than any of the actual 4e adventure modules. I guess it's a kind of 'sandbox'.
It has no delve-style encounter at all and apart from a couple of stat blocks, it's almost edition/system agnostic.
It's not 'ready to play', but with a minimal investment of preparation it can be turned into a great series of adventures. It has a ton of adventure hooks, interesting npcs, locations and even a 'campaign outline'.
Now, imagine if they had added a second book to 'Hammerfast', detailing about 8-10 encounters in the delve format for one 'ready-to-play' introductory adventure. Imho, that would have been the best of both old-school design and the user-friendliness that is expected of a modern product.