Reporting in.
Just going to say, on the matter of power levels, I'm really shocked nobody has grasped just what nice little things each can do that while no as good for direct combat, could be even more devastating.
Hermes; God of
Communication, so lets proceed to really mess up the enemies ability to communicate.
Hestia; Goddess of
the Home, lets make sure they have no true home, no place where they really belong.
Artemis; Goddess of the
Hunt, sic a swarm of hunting insects, or just given them a never ending feeling of being hunted.
Athena; Goddess of
Wisdom, lets see them act without wisdom, without careful forethought and planning.
Dionysus; God of
BOOZE!!!!, get them piss-ass drunk.
Hera; Goddess of
Marriage and Family, lets turn those very bonds against them.
Persephone; Goddess of spring
and Renewal, who brings the curses of the living on the dead, and can block or promote healing.
Hephaestus; God of
Technology, Fire and Science, who can send you to the future, or back to the stone ages.
On the whole Titans thing, I say have Gaia be Neutral, or motherly and grandmotherly to both factions, as she is either mother or grandmother to most on each side, so while she could help, she won't do anything to harm either side directly.
But, on the Titaness I fear the most?
Mnemosyne, Titan of Memory and mother of the Muses. Depending on how things go with her, well, give me physical danger, I can deal with that. How do you fight a being that can control your memories?