If someone can ask on behalf of non-US Skymilers who can't attend:

As SkyTeam continues to grow, will there ever be a comprehensive award chart encompassing travel not involving the 48 mainland US states? Most airlines around the world publish such a chart, including many of Delta's SkyTeam partners. Being based outside the US, it makes it hard to justify accruing Skymiles if there is no way of determining the price to redeem them. The absence of such a chart implies that either (i) Delta is afraid to publish the rates for fear of exposing their medium and high tier redemption levels, (ii) it is actively trying to prevent redemption on partner airlines, or (iii) it does not value non-US Skymiles members as much.