Lore, FFXI or FFXIV

[CyrilLucifer]

I'm not sure what you mean by Hades adding inconsistency.

He adds an inconsistency is because he is an anomaly. He has control over spirits and undead (Ra'Kaznar is filled to the brim with fomor, not to mention the whole totally-not-a-vampire-we-swear Teodore; his servants also include Umbrils and Dullahans, which presumably work the same way in XI as they do in XIV, being spirits inhabiting an armor.), which fall under the realm of true Gods, and higher gods like Promathia/Altana at that. He's Hades, but he's not Hades. He's somewhere in-between man and God without a place really specific for him - something of a false God, if you will, in a game that previously lacked false Gods. All of the Avatars are true Gods.

He just doesn't fit.
I actually feel like he wouldn't be out of place in XIV at all specifically because of what I mentioned. You can tell they were drawing from Ascians with him already.

Edit:

Best case you've got Ramuh, who gives us a nice bit of dialog, worst case you've got Leviathan, who was just there

Ah, if you didn't at least finish WotG you should. I actually quit then, too, for exactly the same reasons you did, but went back. Twice. I'm like FFXI's battered wife at this point, that keeps being abused and goes back for more.

As for the above, can I just say how disappointing Levi is? He's my favorite summon and just...blarg. The Sahagin, however, are very interesting. Easily better than their XI counterparts. XI's Sahagin were cuter, though.