This is the privacy/security extension I have always wanted. Complete control over what gets blocked with rules which can be whitelists or blacklists, global or local, with an interface which makes specifying complex rulesets as simple and intuitive as is possible.
It requires some tinkering to get all the functionality you need from the web without loading any unnecessary trackers but once you get a good set of rules in place for the sites you use, this is the ultimate *-blocker add-on.