if you want flashy t i d d y powers than an alligiance to aphrodite will be your best bet. Athena is a conservative woman who will perform no such whorish activities! Leave my Athena alone lol.
My personal thoughts are Artemis or Apollo. Apollo had half the SP game based on him but yet he was nowhere to be found. I had an idea to include either Apollo or Artemis into the multiplayer based on single-player DLC ideas I had. Todd Pappy said Artemis was a fully-working, playable character for SP but was cut due to time restrictions.
Ares is red for Fire, Zeus is yellow for Lightning, Poseidon is blue for Water & Ice and Hades is purple for Soul, so Artemis' element would be nature and the colour Green since she is known for being the goddess of the Hunt and the Wilderness and her weapon would be the bow.
She'd be able to create traps and command the power of the earth and nature to summon brambles to ensare enemies and she'd be known for being a ranged attacker who is the fastest of all the gods with adequate physical and elemental attack and defense. She'd be an all-round character.
The inclusion of bows would allow all players to use the Typhon Bane (GoW 2) and the bow of Apollo (GoW 3) and she'd use the bow of Artemis and the Artemis Blade which is a favourite of mine.
If you watch all the making of videos on the disc, im not sure wich video it is, but if im not mistaken i saw five gods there. So its only a matter of time before we all find out for sure which god or godess it will be