http://en.wikipedia.org/wiki/Politics_and_the_English_Langua...
Rule 5 states: Never use a foreign phrase, a scientific word, or a jargon word if you can think of an everyday English equivalent.
http://www.mtholyoke.edu/acad/intrel/orwell46.htm
"Bad writers, and especially scientific, political, and sociological writers, are nearly always haunted by the notion that Latin or Greek words are grander than Saxon ones..."
"For example, the word "photograph" (from Greek light+writing) would become "sun-print" (from Saxon). Other terms include "wortlore" (botany), "welkinfire" (meteor) and "nipperlings" (forceps)."
See also http://en.wikipedia.org/wiki/Anglo-Saxon_linguistic_purism
There's cases where Swiss French (counting), Quebecois French (conjugation of many verbs) etc is more logical or more consistent, but the changes are rejected as foreign by the Académie.
Edit: Oops Jacques beat me too it.
I like the hypothesis, I'm sure there must be some research on this.
There is a writing style guide written by a well-known English author, Victorian era, that suggests using saxon over romance words for clarity. I feel this is valid (also more concise, more punchy (more consonants)). I thought it was Kipling but perhaps not... somebody help me out?