What are everyone's impressons of Adventurer's Vault?
While I was disappointed at the lack of an Orc Shotput, I was encouaged by the sheer quantity of new magic items.
They also included updated rules for enchantment that should be helpful.
Basically: You can put a property on a magic item that has no property, or you can upgrade a magic item to a more powerful version 5 levels higher.
You can't make a lifedrinker into something else, but you can go from +1 to +2.
There's also a ritual: Transfer Enchantment that allows you to take the enchantment on one item, and transfer it to another (valid) item. So if you find a +1 Lifedrinker Longsword, you could move it into a mundane Axe and make it a +1 Lifedrinker. You can overwrite the enchantment in an item, but not downgrade it (not sure why you would want to).
The Dwarven Thrower (gloves) look interesting. They let you make ranged basic attacks with any melee weapon (it gains the Heavy Thrown property) and it will automagically return to you.