Masteries Design

Fire

• Blazing Trail - Flame patches lasts longer
• Wave of Flames - increased distance
• Immolate - Larger area of effect/longer decay time
• Living Bomb - Damage upon death is based on Total health of victim - increase percentage of that
• Wildfire - stacks of burn applied with wildfire
• Rain of Fire - Duration
• Rain of What??? - Increased fear duration
• Firestorm Fury - Increase attack speed during effect

Storm

• Call Lightning - increased shockwave area
• Chain Lignthing - Number of jumps
• Conduit - greater damage buff
• Lightning Rod - increased effectiveness of created lightning strikes
• Thunderclap - Longer stun bonus for enemies affected with conduit
• Stormborn Resilience - More shield?
• Echoing Thunder - increased effectiveness of created lightnings
• Overload - Reduced number of stack required to trigger the effect
• Discharge - number of charges
• Closed Circuit - effect restores some of the ability damage (each jump reduces damage) - mastery could restore more of it
• Eye of the Storm - Increase effectivenes of chain and call lightning triggered from this

Blood

• Blood in the water - greater damage buff
• Deep wounds - grant % chance to refresh stack with lowest duration
• Relentless Butcher - greater chance to apply addtional stack
• Crimson Frenzy - increased effect duration
• Sanguine Burst - ability can be used on enemies with less stacks
• Thirst For blood - additional base life steal
• Bloodlust - Increase attack bonus speed 
• Hemmorrhage - increase number of stacks applied ? (make 2 as base, and 5 as cap)
• Bloodletting - increased percentage damage (like living bomb)
• Rending slash - Increased ability range

Arms

• Relentless - more crit strike buff
• Restless Blades - more cooldown reduction
• Second Wind - more hp per killing blow
• whirlwind - longer duration
• Ruthless - greater damage reduction
• Blade DAnce - increased duration of attack speed buff
• Unbreakable will - Treshold at which ability is triggered is increased (base 15%, and up to 50%?)
• Surge of the blade - more cooldown reduction per target hit
• Weapon Mastery - More basic attacks are affected by ability
• Cleaving Strike - increased duration of attack speed reduction
• Warrior's Poise - increased max reduction value

Earth

• Obsidian Scales - damage is spread over longer duration
• Tectonic Pressure - Clear more damage stored in obsidian scales
• Earthquake - More frequent damage ticks 
• Aftershock - Duration increase is ... increased ?