By emphasizing all the different Lunar cultures, they are going to
have very thin and scatterred descriptions of their Gods. There is
still very little about Natha or even Tarnils for example, tow
dieties many adventurers should be expected to follow. Whereas the
Heortlings clans may have different sub-cults, but, basically, you
have a ton of info about Orlanth, Vinga, Ernalda etc.
Not saying this is good or bad, but, you can't blame it all on space
considerations and "wait till ILH-3". It was a conscious decision
by the writers to emphasize breadth instead of depth.