By Jim Webster Some things in rugby just never change, like the dimensions of the pitch, height of the goalposts, power of that mob across the Tasman, halfbacks chattering all the time and most referees not knowing the laws very well. But some things have changed since William Webb Ellis “with a fine disregard for the rules of football as played in his time” picked up a football in 1823 and ran with it - like the weight of the balls we now toss around, increased use of mouth guards, the design and fancy colouring of our footy boots and the pattern of the lightweight jerseys to mention a few. But a much more radical change is about to occur on these shores and its impact is going to be quite profound nation-wide. It relates to the type of fields on which Australian rugby will in future be played. The switch has already started with Woollahra Oval, the long-held home of Sydney’s renowned Eastern Suburbs Rugby Club, set to be ripped up after this coming season for a $1.5 million