I kinda already like the Blue Ensign, and the Red Ensign, and the lighter RAF Ensign, it even links us back to the language we speak (or should that be spoke).
If you are referring to the Union Jack as English you might just be offending the Irish and Scottish parts that make up the flag. The Union Jack represents the United Kingdom of England, Scotland, Northern Ireland and Wales, four separate countries each with unique language. The English flag is just the cross of St George. At the time of of the Australian flags creation the United Kingdom included the entire Kingdom of Ireland. So what language should we be spoking to each other? English, Irish, Ulster Scots, Scots Gaelic or Welsh? I personally prefer Welsh, although I hear of late that Urdu is competing for the national language of England.