The point still stands though, Matan, that you cannot make all sorts of predictions about what Birthright was "supposed" to be and then decry others for sticking to what is actually in the book.

Canon, by its very nature, cannot evolve without either everyone (including this site, in lieu of TSR) agreeing it so - otherwise, it is simply a large collection of house-rules, however brilliant or logical it may be.

While I also believe in the interconnectedness of the various game settings, I also try to rationalise each setting's individual rules within the greater whole. BR's only transitive plane is the Shadow World, but that's hardly a problem. Dark Sun is only connected through the difficult-to-access Grey. The new Faerûn's planar system doesn't match the Great Wheel, but does parallel it, so there are still distinct links. One does not need enormous amounts of additional data to synthesise them all together - it might help enormously, certainly, but you don't need it.