I'm interested to see what you come up with. It sounds like we will have the 8 stats:
Strength, Agility, Fighting, Awareness, Stamina, Dexterity, Intellect, and Presence.
In addition to a point buy system, you might consider including some Archetypes for players who would rather just choose a balanced build instead of trying to figure out which powers to buy. It's a trade off between having a high level of customization versus being able to create a character quickly and getting right to the action.
Some Archetypes to consider including are:
Battlesuit, Construct, Crime Fighter, Energy Controller, Gadgeteer, Martial Artist, Mimic, Mystic, Paragon, Powerhouse, Psychic, Shapeshifter, Speedster, Warrior, and Weapon Master