Well adder here is my reasoning for change in avatars.
1. Deleen with hair (not right for minbari, espeically if there are the leader of thier power in game they should be BALD!

)
2.Londo looks like a wasted drunk, and the pic is low quality, ive always seen to me that the centuri as a respected and proud race
3.G'kar avatar is not G'kar but the war leader from ep 2x22
4.I didnt like the background on the KOSH pic, also was low quality
But other then that, the rest r fine
BTW i still love your logos
Comparsion pic
Star Adder/Rav's avatars
Spaxy's
You the user pic which one u like better, ive just given you another option