I call that a feature. I'm way past sick of flakey transparent proxies with bad caching behavior.

That's not true, your browser still handles caching just fine. More bandwidth trumps caching anyway, and caching forward proxies will be a thing of the past.

Heh, bandwidth can help, but caching helps primarily with latency.

The latency benefits of an extra caching layer are minimal, especially since HTTP pipelining and CDNs will continue to exist.