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Given limited stunting and assuming characters have a way to get and stay in attack range of each other, everything is going to come down to mote pool size, efficiency of PDs, and charm-based mote-regen. Which means that an active ToS will quickly determine two things:
--Whether high-movement kiting archers are Better Than Everything (assuming the normal spectrum of defenses, this probably comes down to The Freedom Stone and Gem of Perfect Balance to defeat clinch, knockdown, and blockade movement, and the archer's Per+Awareness versus the melee guy's Dex+Stealth to keep track of him and keep hitting him. Thrown with Space-Warping Needles may also be a viable tactic, negating most/all of the melee-guy's cover at the cost of motes spent recalling your needle and most of your comfortable kiting range.)
--Which Exalt type has the best Reactor and/or Overdrive charms. Starting mote pool size is also helpful here, but regain is probably most important.
Soak-based Abyssals, Infernals, and akuma will all fail _hard_ due to the ease with which the other types (particularly Solars, of course) can get access to Holy.
Celestial Monkey Style will be the most commonly practiced Martial Art at greater-than-starting XP levels, for two reasons: one, when mastered, it's compatible with any armor and any attack made with Martial Arts (so: unarmed, Martial Arts weapons, and anything that's a Form Weapon for some other style you have), and two, it gets you a scene-length effective doubling of Parry DV. Ideally, combine with Chaos Targe to attempt to parry unblockables as if they weren't. Given the fact that DV optimization will necessarily be important in a limited-Willpower match, CMS+Chaos Targe becomes quite nice.
For Eclipses, Moonshadows, and (if they can deal with their small mote pools and complete lack of mote-regain) Sidereals, Defense of Shining Joy + Hauberk of Bells gets Performance to DDV twice, PDV once, all Dex-based dice pools once, and ignores all penalties to DDV, at the price of a charm, a four-dot artifact, and an eight-mote attunement.
Wood Dragon Style as far as the Form also seems like it might be nice for a soak-and-regen strategy, though I think those will go down hard to Grand Killsticks and anything with aggravated damage, so it won't actually end up being optimal.
If allowed for non-Sidereals, Violet Bier of Sorrows will of course see frequent use as a one-charm dip (Yay, double Join Battle successes!), and Blade of the Battle Maiden may become a key component of Grand Killstick builds, as even the post-errata version is pretty darned strong. And scene-length, which is critical with limited regen.
Terrestrials' free-use-of-reflexives is going to be extremely relevant in starting-level play, but become rapidly useless as XP ramps up. Except possibly for Terrestrial Akuma, if they're even allowed. *shudder*
The Malfeas, Cecelyne, and SWLiHN Mythos Exultants will either be very useful or completely useless, depending on how high/low the stunt budget is set at.
Due to Overdrive drip and free Holy, Glorious Solar <weapon> will be the standard for Solars. We may see the occasional Crimson Bow.
The last point is nothing new, but given the importance of constant or scene-length abilities to boost pools without constant mote expenditure and charm activations, the Brutal Attack Merit + Demon Ink Tattoo + Green Iron Heart + Prosthetic of Clockwork Elegance combo is going to be really popular, considering that for 13BP and 13m committed it can get you:
Base Melee attack pools on Str rather than Dex
+6 Str
+5 Stm
+2 Dex
+1 Melee, +1 Dodge, +1 Awareness/Resistance/Integrity/Stealth/Athletics/etc., or +2 Melee
+3 specialty Melee (insert high-Rate weapon of choice here)
...all of which adds up to +10-11 dice to your attacks, +1-1.5 DDV, +3-3.5 PDV (or +6-7 if using Celestial Monkey Style), and (assuming Ox-Bodies equal to Stamina), +5-20 health levels, depending on whether you're a Sidereal or an Infernal/Lunar, not counting extra Dying levels. Also, none of the above counts towards dice caps.
The downside, of course, is you lose instantly to forced-deattunement.
Regardless, I look forward with interest to seeing the results.