Oh boy... here I go:
Terran:
Bunker Restriction - (having units attack like a bunker)
Bunker Type Restriction - (only certain units can attack from inside bunkers)
Repair Restriction
Cloakable Restriction
Number of Spider Mines Restriction
Number of Nukes Restriction
Cloak Mana Drain
Blinded Unit Sight Range
Duration Length (Blind)
Irradiate Damage Per Second
Duration Length (Irradiate)
Defense Matrix Health
Duration Length (Defense Matrix)
Absorbtion of Defense Matrices (Ex. Can each hit on a D-Matrixed unit take away 5 health, etc?)
Duration Length (Lockdown)
Zerg:
Number of Broodlings spawned.
Unit ID spawned from Spawn Broodling.
Energy of Spawned Broodlings
Training Units Restriction (units cannot be trained from Zerg buildings as of 1.13x?)
Larva Restriction
Creep Restriction
CC Infestation Targeting
Nydus Canal Restriction (Only Zerg units can go through Nyduses. [Nydii?])
Consume Targeting
Plauge Health Drain Rate
Plauge Duration
Ensnare "Slowing" Factor
Ensnare Duration
Dark Swarm Duration
Moving/Attacking while Burrowed
Building Morph Restrictions (Right now, units can only morph into specific unit IDs)
Cocoon (What unit comes out of a cancelled cocoon)
Protoss:
Pylon Restriction (Psi Fields are only displayed when a Pylon is selected)
Arbiter Restriction (Arbiters cannot be cloaked)
Number of Interceptors/Scarabs Restriction
Reverse Recall!
Stasis Duration
Mind Control Targeting
Recharge Shields Restriciton (restricted to Shield Battery?)
Psionic Storm Duration
Hallucination Life
Number of Hallucinations Spawned
Disruption Web Duration
Removal of Shields after casting MC
Maelstrom Duration
Amount of Energy/Damage dealt by Feedback?
Neutral:
Area-of-Effect versus. Single Target (Ex. AoE Blind, Single-target Ensnare)
Cast-on-Self spell targets
Changing attack targets(Ex. Having the Marine's attack only effect Buildings, etc.)
Infestation: Only certain unit IDs can be infested. (Is this an EXE related thing?)
Number of Races Restriction (Hey, I can dream.
)
Number of Transportable Units Restriction (Transports can only hold 8 units before they start disappearing?)
Display Message Action (Ex: the Nuclear Launch Detected message. Is it possible to remove it, or to add a message display to something else?)
Upgrade Effect: (Ex. Can we change the amount that Ion Thrusters speeds up the Vulture?)
Upgrade Targets: (Ex. Making Adrenal Glands affect the Marine)
Resource Restriction: (Only the original resource fields can hold resources)
Resource Depot Restriction: (Only buildings can use the Resource Depot flag)
Gather Rate (How many minerals per "Chunk")
Depleted Vespene Geysers (Determining how much gas is gained per tank from a Depleted Vespene geyser.)
Rally Point Restriction (Only certain units can sucessfully set rallypoints)
That's all I can think of right now. I'm not sure if some of them are possible... I know you've done others or I've asked you already, but I included them for the sake of completeness.