Demon edge:
Why change the most and the best detailed icon in Dota2.. why not put a glare/light on it (or somthing like that) to keep it updated with the rest but the old icon should be there it was allrdy beyond perfect
i guess ur not finished with this item are u ?

Satanic: Guess ur not finished with this icon?
however i suggest keep the old icon (Totem with horns) but form a diffrent angle & more detailed to fit the rest

Soulring: Great item i do suggest when u use this items a very small smoke effect apears on the hero to make it look more
of soul burn (i suggest out of control i guess wel look the item ur self

Diffusal Blade (upgrade2): should have diffrent colors just like dota1 have

Maelstrom: guess this item is not finished?
if not this item needs a change looks bad somehow

Millonir: guess this item is not finished?
if not this item needs a change looks bad somehow
keep the old icon but with diffrent effects would do the trick

Soulbooster: icon is is way to dark

Energy booster: icon is way to dark

Blades of attack: is way to dark needs more light

Reaver: way to dark needs more light

Mask of maddness: way to dark needs more light

Shadow blade: looks like it has lower details then it had before

Mystic staff: nice looking item even better with the upgrade however keep the ball inside the staff white like it was before
the green ball doesnt fit

these are my suggestion based on the new icons of dota2