Actually it seems to matter where the original will come from. I have no direct first hand experience in the matter but assets in several countries and read it is better to have a will in the country where the assets are located, for those assets at least, which might imply several wills. This might depend on where the assets are located, and whether the legislations are very different from one of those countries to the next.
Besides Grul above is harsh, it is not a simple issue trying to envision one's demise while planning for the well being of loved ones, than put one's trust in a profesionnal who might not be up to what he promised, when time comes. i doubt ET is the best lplaced to ask for advice, but it makes sense to ask a few sources, including ET.