He seems to suggest the top-lists should be replaced by a list of apps that Apple classifies as "great software". However, Apple already shows a list of featured apps and this list already has a huge impact on app rankings (and IMO Apple will never be able to create a perfect and comprehensive list)
From my experience, I'd say that removing the top-lists will hurt the ecosystem (most users as well as many developers). For example, one of our iPad apps was #1 in the Finance category for six weeks. The media first mentioned this app several days after it became #1. Apple also featured the app a few days after the app became #1 (the app was never priced at the lowest price tiers). The app got initial traction organically and the #1 ranking helped it get even more traction.
It isn't realistic to expect Apple to be able to pick a list of "great apps". Following up on my example, we launched a new version of the iPad app a couple of weeks ago, but Apple isn't featuring it on the "new and noteworthy" list even though the app has hundreds of reviews with 2/3 of them being 5-star reviews and another 1/4 being 4-star reviews
Relying solely on Apple's featured list and on media-connections or advertisements may work for one class of developers, but for many other developers, the (category-specific) top-lists are helpful. I also think that the top-lists are helpful for users. Removing the list isn't going to make it any more easy for users to search through a million apps in the app store.