I appreciate all the advice. At the table, I'm basically the new guy playing against the veterans with huge libraries of cards and competitive experience, so it was easy to forget the basics when it came to piloting the deck. I also have realized that I've really only seen maybe a third of my cards in action, so it may be a bit early for me to be making judgements. I'll definitely have to report back when I get some more games in this weekend.
You picked a good general then. Thada scales extremely well with almost any playgroup.
I think you should check out Kresh, the Bloodbraided. He works really well with Corsejack Menace and he is his own internal Death's Presence. The creatures you would run to make Kresh really fat would also work well with Korozda Guildmage. I also think you will enjoy the support red cards you can add to your Golgari shell.
Sachi is one of those cards that I make space for when initially building but then always cutting at the last minute. The 4 mana with no haste outlet makes her very clunky tempo wise.
I am in favor of lowering lifetotal. I feel bad when the aggro player uses enough resources to kill one person and then gets curbstomped for the rest of the game.
Skullclamp - Sword of Fire and Ice? Less awkward IMO. You have a few on demand clampable creatures, but not enough. You have lots of creatures that can pick up and appreciate a Sword however.
Protection from red swords are non-bos with Xenagos.
Uril, the Miststalker + land destruction seems pretty inexpensive if you don't pick up modern hexproof staples. I'm still kicking myself for not grabbing a Daybreak Coronet and a Kor Spiritdancer when they were bulk rares.
I really don't like how the Beta forums don't let you click "Last Page" when you see a thread. I prefer that to clicking on the last number in the string of numbers for the forum thread.
Gashnaw - I have seen a few posts related to your Azami deck. Mind posting your list? I am going heavy wizard tribal but I am having problems finding wincons that are not as cut throat as the usual Azami top tier lists.
You picked a good general then. Thada scales extremely well with almost any playgroup.
I like her in Doran, the Siege Tower for sure but besides that I'm not sure.
Protection from red swords are non-bos with Xenagos.
You can also include auras with Rancor-esque effects like Spirit Loop and Undying Rage