I guess this is a question for marcelloc, since he's the expert. Any thoughts to building a Squid 3.4 package? Is it possible?
I'm not sure about any new features (does the new Transparent stuff offer any benefits?) except I like the look of:
_Squid supports reading configuration option parameters from external files using the syntax parameters("/path/filename"). For example:
acl whitelist dstdomain parameters("/etc/squid/whitelist.txt")_
which would allow us to build a blacklist/whitelist file and import it more easily than entering it in the GUI.