Defender is one of the weakest traits if not the weakest traits in FFH, so I suggest to improve it a bit. Giving them better forts was already proposed, which I think is a good idea, but it is IMO not enough, so I suggest to add +20% healing rate in your cities and +10% healing rate everywhere else in your own cultural borders. Another possibility would be to give all your units +1 overall strength in your borders (or +0 offense +2 defense) and -1 strength (or -2 offense -0 defense) in enemy cultural borders and no changes in neutral terrain. Both possibilities would have a real advantage in fighting the early barbarian forces (Hasn't FF something similar to my second suggestion for the Elohim?) and you would actually be happy to have this trait. As it is right now you could give the Elohim leaders as well only Philosophical (Einion) or Creative (Ethne) and it would make no big difference.