Read the article above and also the minutes of Avebury Parish Council which is linked within your link. Think its highly unlikely there would be any mileage in attempting to change the name of The Great Stones Way as it seems to have already taken off in a big way. The Ramblers Association's magazine 'Walk' has a well written/photographed article about The Great Stones Way in its summer edition. http://www.walkmag.co.uk/features/walk-in-depth-great-stones-way/
It gives map references; train and bus routes; information about the Ridgeway with Friends' website address; and some thought provoking views on Avebury and Stonehenge. Seems this walking lark is catching on - wear and tear needs to be consistently monitored though.