I like many of the changes apparently being done to races thus far, such as the splitting of the elves into Eladrin (what used to be arcane/civilized elves) and Elves (the naturalist elves) on top of the Drow. Nevertheless, I wonder whether this is going to be shoehorned into existing campaign worlds. For example, the Forgotten Realms has a history of numerous elven subraces, and it would make little continuity sense to get rid of them in favour of the new system. There are also the Planetouched, in FR. Aasimar, it seems, may bear some similarity to the new Eladrin, yet due to continuity reasons, I would still rather keep the aasimar in the Realms, even though I like what they are doing with the races in core.