Overall, I like. Still, there are a few changes I would want to make.
I don't like the name Guild of Hammers; it should be switched back to Guild of Endeavors (but keep the Guild of Hemmer's mechanics). If you don't change it, I will
(not that you care, or that it would effect anyone's game but mine)
I still don't like the name Luridus. If you don't change it, I'll make the Empyrean's High Priests be called the Illuminati in my version.
I still don't like the name Gibbon Goetia. Change it back to Kael Colbane, or, better yet, Tibbar Etihw. I think thats what I'll rename him.
I still think that the anti-recial promotions should not be removed from the game, but only be available through random events. I guess I'll have to teach myself how to modd events in order to change this one. (I don't think I would have any problem adding the promotions back, but my first attempt at adding new events didn't go too well)
Mercenaries losing their HN status is a little disappointing. At least some of the of the mercs gained through the random events that the guild allows should be HN.
I'm not sure I like the Mounted mercs as a UU idea, since mounted units typically can't be fortified or get all the same promotions. I think that there should instead be several different types of Mercenaries (Mounted, Melee, Archer, Siege) that are hired in the same way.
I was just thinking that it would be really cool to be able to hire pirates at Pirate Ports, Harbors, and maybe even coves. Ideally, I would want a hire pirate "spell" available to any unit (of any civ( on the tile with the improvement. This would them trigger a deal-type random event in which you can negotiate for various amounts of units (pirate ships, HN boarding parties, etc) in exchange for gold. Of course, these are pirates, so they aren't that likely to stick to their word. It is more likely that they would just take your money and run (or maybe you would get the units, but with limited duration), and also a chance that they will commender the ship you sent there to negotiate. The Lanun would typically get better results from these deals, but it would be risky for them too.
I've never understood the reasoning behind the choice of what spells Govannon could train. I like than he's getting a couple more spheres to train, but really don't see why he can't just train them all. I'll probably change it so that he can train any sphere (but needs the third (or maybe only second this time?) level in order to train level 1), like I've done in every version since .21 ot .22. However, I would prefer it if this were changed in the main game instead, That way I'd have a little less work to do, and the spell's icons wold all be different (it is sometimes confusing to have 7 spells with identical icons)