All right, I've finished my pass on these items- I may still come back to them, so do respond to the decisions I've made if you feel strongly, but these were my initial changes and the thoughts behind them.
Epic Antique Greataxe: Added Righteousness, increased base damage to 3d10, re-added Adamantine property (which was replaced by Metalline for the Epic version). I realize that the +5 Holy Burst of Greater X Bane weapons that will be possible to make through the crafting system offer this weapon some serious competition, but I'm content for it to stand somewhere between a Min II and the best of the best crafted weapons, which is where I believe this will put it.
Epic Kronzek's Cruelty: Added Lightning Strike and Improved Destruction. It won't quite hit the DPS of a Lit II khopesh, but I think the Improved Destruction will give it a very nice Epic-specific advantage.
Epic Phiarlan Spy Dagger: Added Improved Paralyzing. Like I said, I thought this was a fine idea to give this weapon some extra utility, so now it has it.
Epic Noxious Fang: Added Disintegration. Yes, making a throwing dagger desirable for Epic is mostly an exercise in futility, but I figured I'd give it a little bump regardless.
Epic Garos' Malice: Replaced normal Incineration with Greater Incineration (procs about twice as often as normal Incineration, for the same amount of damage). Greater Incineration should do DPS in the neighborhood of Lightning Strike, albeit in a damage type that a lot of enemies are resistant/immune to. As a tradeoff, it procs quite a bit more often for smaller chunks of damage, so you will get fewer "wasted" procs. And I do hope this becomes a go-to weapon for fire-weak enemies.
Epic Brimstone Verge: Replaced Fireball with Delayed Blast Fireball, added Epic Combustion VII (60% damage boost to fire spells). The spell also has a DC that is 12 higher than a normal item-triggered Delayed Blast Fireball would be (although this effect was added some time ago), as well as a special, totally new effect: Wand Maximizing, which causes the wand to do 100% extra damage (as though the spell were maximized). Unfortunately, due to the method of implementation on this, it will not stack with the enhancements which increase your wand damage; perhaps we can address that at some point, but for now, at least you will be doing 25% more damage than the highest tiers of those enhancements can provide.
Epic Roderic's Wand: Now grants Augment Summoning while held. This affects the monsters you summon with the wand as well as the ones you summon from your own spells, just as though you had the feat. The spell has not yet been changed to summon all the creatures that are now available for its level range, but those plans are in the works (as well as changing the normal wand to do the same).
Epic Brawn's Spirits: Added Incite 10%, Exceptional Con +2. I think Incite 10%, from what I've heard from posters, appears to be the way to go, simply because it's a more difficult effect to slot than Incite 20%.
Epic Grim's Bracelet: Replaced the natural armor bonus with Dodge +3. This seemed the best way to go that wouldn't escalate the player/monster AC arms race. Sorry to those who have worked hard for a Chattering Ring, but at least you have another way to slot this effect besides running Titan now.
Epic Mask of Comedy: Improved Healing Lore to Major, Devotion is now Superior VII. I'm hesitant to go top-of-the-line on the Lore because these are still some of the easier Epics to run.
Epic Mask of Tragedy: Improved Void Lore to Major, Potency is now Superior Nullification VII. See Mask of Comedy above for reasoning on the Lore.
Epic Phiarlan Mirror Cloak: Improved Spell Resistance to 30, added Spell Absorption (5 charges, 1 recharge per rest, same as Mantle of the Worldshaper), added Greater Light Resistance (30 resistance against light damage). Hey, this one may become desirable for Pale Masters for those quests where Searing Light and Sunburst just can't be avoided.
Oh, and I did remove the Blurry, though I don't think it will be particularly missed.
Epic Ring of Elemental Essence: Added Epic Combustion/Glaciation/Magnetism (60% damage boost each), added Inherent Resistance 5 to fire, cold and electric. Pretty straightforward; the ring now gives damage boosts that fall between the highest you can get statically and the potions/Amrath clickies that give 75% temporarily. Some will find that useful, others won't.
Epic Shimmering Pendant: Increased Charisma boost to +7, increased skill boosts to +20. That makes this item the only +20 source of the two skills it provides (diplomacy/perform).
The Wand Maximizing effect (as well as the +12 to DCs) has also been applied to the Epic Cacophonic Verge and the Epic Winter's Wrath. The eWinter's and eBrimstone are now doing about 200 damage on a failed save, and the eCacophonic does about half that with Greater Shout, though it can also apply the stun, of course.