Unfortunately I lost most of my Gestures redesign, but I can outline the basic concepts.
I just wanted to say, this sounds awesome
and I'm totally into it. Hence, why I was inspired to add onto this.
What if there was a whole tree dedicated to alternate signs? The regular Gestures tree works about like it does already, but a second, default unlocked tree ("Compelling Gestures") gives us alternate Gestures. It begins with only
Gesture Mastery - passive. Increases the power of the bonuses from Gestures. At talent level 5 (not raw!) it allows you to hold an extra Gesture in your mind. At talent level 7 it allows for another, extra Gesture to be maintained. When multiple melee Gestures are maintained, they cycle in sequence from the first one sustained to the last, and then begins again.
But particular classes and actions unlock more Gestures in the tree. Some quick, shitty examples:
Gesture of Domination (Cursed) - can apply Domination on melee attack, bonus mind damage. Domination melee attack is not triggered, only the Domination effect.
Gesture of Doom (Doomed) - has a chance to call a nearby Shadow to Blindside the opponent you hit as a free action on melee hit.
Gesture of the Deep Mind (Solipsist) - Has a chance to lower the enemy's Mind Save for a few turns when struck. When this happens, restores your Psi by a small amount. (Kind of a "brain drain" theme)
Gesture of the Wilds (Wilder) - Deals nature damage, restores (lowers) EQ on hit, and has a chance to slow enemies
Gesture of Cleansing (Zigur) - deals manaburn damage.
Gesture of Dreaming (Dogroth Caldera) - has a chance to put enemy to sleep
Gesture of Stone (Harkor'Zun) - deals phys damage, has a chance to stun, daze or pin. Scales off higher of mindpower or physpower.
Gesture of Death (Lichform? Or the Last Hope Graveyard) - deals darkness and cold damage, scales with spellpower rather than mindpower
Gesture of Time (Temporal Rift) - deals Temporal damage, scales with spellpower, has a chance to slow
Gesture of the Burning Hells (random reward from demon statues) - deals Demonfire damage, scales with spellpower
Gesture of the Sun (trainable in Sunwall) - Deals Light damage, scales with Spellpower. Chance to Blind.
Gesture of Decay (Fall of Zigur) - Deals Blight damage, chance to disease. Scales with Spellpower.
Gesture of the Hidden Fist (Arena of Blood) - Acts like a regular bog-standard Gesture but has a (very small) chance to trigger another free gesture bump upon hitting. (like the Recursion ego). This will trigger your next Gesture in sequence. Scales on the higher of your Mindpower or Phys power.
Obviously, there's a whole assload of Gestures here, and they should not all be available to every character (and depending on character strength and area spawns, it may not be even possible to get all of these on every character - that's intended). In fact, I was considering making each one a chance to learn, but that just seems annoying. Mind classes won't have much use for the Spellpower gestures and caster classes won't have much use for the mindpower ones, but this makes Gestures more of an all-around skill for anyone. Mages need good mental control as well, you know. Some Mudra might do them some good.