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I appreciate that this is a Holy War issue, and so there is actually no rational optimum solution (though obviously you are Bad and Wrong and the front brake should always be on the right...), but in general changing what you're used to just to improve cable routing is a Bad Idea; if you forget you either lock the rear trying to do an emergency stop, or send yourself over the bars/lose the front when trying to scrub off speed.
Is there any easy way to work out by how much I can trim this mess down without compromising braking and gear changes?