I have no problem with there being lots of deities.
From a purely play standpoint there probably needs to be at least one deity available per race per alignment per cleric type* (or as close to this as you can manage) such that if someone wants to play a cleric of type z, race x and alignment y there'll be a deity to support it. And Humans, of course, are going to have several pantheons depending on what setting you're using and-or what real-world cultures your game world is likely to see in play.
* - in our system Druids are Nature Clerics and follow deities just like any other Cleric, we also have War Clerics.
Lan-"and it's all irrelevant if the deities don't have character"-efan