Yeah it is a shame they've taken that approach as there's a load of great BL characters that I'd love to see them do models of, especially if they ever do an Allies or Dogs of War style book again. Characters like Felix & Gotrek (Max, Snorri & Kat too thinking about it), Brunner the Bounty Hunter, Ulrika the Vampire, and the huge Knight of Morr that accompanies Mathias Thulmann the Witch Hunter around ( I forget his name, but he is an awesome character) would all be great additions to the game, or re-additions in Felix & Gotrek's case.
Also with regard to Egrimm van Horstmann it would make sense to have him in the new book, as the current selection of WoC special characters are pretty much all combat types (Archaon, Valkia, Kholek, Wulfrik, Throgg, Sigvald etc), and he's a Sorceror Lord which they could use in the mix. Plus with him riding a Chaos Dragon it's a nice reason for another 2/3 option character/monster kit, as it could have the bits to assemble: Egrimm & Baudros, Galrauch and a regular warlord on dragon.