In Amber fashion, I'm envisioning 100 points and four stats: Physical, Mental, Social and Legend. This follows the framework of the three groups of stats from Scion's version of the Storyteller system. Because there's such an emphasis on Epic Attributes in Scion, I thought this might make conversion a bit easier. You can also sell down attributes, but I don't have cute names for the different tiers of powers. I'd also have a Luck attribute, which is basically Stuff with a more intuitive name.
For the first three stats, I was thinking of having them pick a specialty sub-attribute. So for Physical you could focus on Strength, and this would give a bonus of 10 or 20. You can also pick five skills, which are not strictly associated with a stat, which also provide a boost in stat for when that skill applies. I don't have a similar system for Legend, so I'm not sure if I should worry or not.
For powers, it's mostly a conversion from the standard powers, with each dot costing about 5 points. You have to have at least as much in your Legend attribute as you do the power. You also need as much in your relevant attribute as you do Epic Attribute. For each Knack and Boon, I was thinking of abstracting it a little bit. So you can model your power after what they use in the books, or you can make up something of similar power.
Items would basically follow the Amber format, with a new 1 point Item Power, Purview, which works like the Relics in terms of Boons.
So a character might look like this:
Steve, son of Hermes
Physical (Dexterity): 5
Mental (Wits): 25
Social (Appearance): 10
Skills: Occult, Athletics, History, Firearms, Extemporaneous Speaking
Epic Wits  (Instant Investigator, Opening Gambit)
Epic Dexterity  (Lightning Sprinter)
Psychopomp  (Unerring Orientation)
Fire  (Flaming Attack)
Arete (Athletics) 
- Jack Sparrow's Compass  (Purview [Pyschopomp] 1)
- Magic Zippo Lighter  (Purview [Fire] 1)