How about a god for each weapon types? (minus Daggers which would be under swords) so that would leave us with 10 which should be more reasonable? Or is that still too much?
Yeah being related to gods would be to OP and Mary-sueish. I would say the number of gods should be related to the basic classes which they could in universe influenced. Which would give us an even 20 gods and goddesses.
That be interesting, even though you need magic in your blood you don't need much to be able to use magic the more Magic in it the stronger it is. And maybe like in Avatar certain physical features should point out what kind of magic they are more inclined to. Like blond hair for light magic or green eyes for wind magic