ACLs for buffer sizes?

I've been wondering if it would be beneficial to have per-connection
TCP buffer sizes. E.g., if you're an accelerator, and have distant
clients on slow connections, you probably want fairly large buffers;
however, you probably also want your server-facing buffers to be quite
small, assuming that they're very close, so that if things get
congested you don't have any nasty side effects.

The easiest way to do this would seem to be using ACLs.

Any thoughts?

Cheers,

--
Mark Nottingham       mnot@yahoo-inc.com