I really like the approach. This is where the net is headed. Graphical browsing is unnecessary in a way. Now, the only issue with that is the way the web is currently heading. A site hosted at aws or cloudfront is hard to whitelist...
Cumulatively I think AWS is adding a hefty amount of latency.
The way their DNS is configured is often convoluted, requiring excessive layers of gratuitous lookups. It sometimes borders on absurd, much worse than I have ever seen with CDNs.
Fastly is doing a much better job with minimizing DNS queries. Certainly better than Akakami ever did.