polipo, ziproxy

I'm using polipo with ziproxy over a WAN, with polipo closest to the broser,
chined to ziproxy on the local network, which is then chained over an ssh tunnel
to another ziproxy at the remote (internet-connected) end.
Unfortunately ziproxy can't handle persitent connections or pipelining, and so
these polipo benefits are unavailable.
Is there a recommended way to set this up?

I'm thinking perhaps using {ziproxy -> polipo (with no disk cache) -> internet}
on the remote end, which would allow polipo to aggregate individual connections
from ziproxy before going out to the internet.

What about over the WAN?  Is there much benefit to pipelining requests into
individual tcp cpnnections, considering that everything is being tunneled over a
single 'real life' ssh tcp connection?

What ziproxy provides is content conversion, gzip'ing text-like data,
'optimizing' html and javascripts, and re-compressing image files to try and
reduce their size, which it is very successful at.

Are there any plans to add 'content plugin' type functionality to polipo?


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