It is fair point that the most playable races are Empire and HE as they are humanlike..
So CA definitely will have at least one good, human like race at the release date.
Welsh, problem with Kislev is the number of LLs. You can have two Legendary Lords at best (unless CA will invent a lot more
). All other core races from both games have like 4+ , we are now reaching 6 with lizardmen and HE/Skaven will probably have 6 soon too..
Chaos, Southern Realms, Chaos Dwarfs are easily 4+ characters
Ogres have exactly 4 notable characters
Kislev has 2 with one being technically dead (but that´s not big deal, it is similar to a few otehr characters we already have
)
Kislev is simply similar to Norsca (or Araby in theory
)