Burning Metal has a 1 second cast time, but you have to take into account the animation time as well.
Awakening weapons and armor came out. That means that endgame players are reaching ridiculously high stats both offensively and defensively.
It was previously viable to go either all damage or all Eva, but nowadays once you reach level 65, you start seeing hybrid builds. Either built from the Eva armor and adding Crit gear or starting from Crit armor and adding Eva proc accessories, etc. It's not so much choosing Eva or Crit, but choosing where you start and a slight tendency towards your initial build. Also, the benefit of Eva in a PvP setting has diminished. You need near max Eva to counter the high Accuracy afforded by better gear that has been released. In PvE, high Eva is still helpful, but it is standard to have capped Block, extremely high defense (the cap is now 70%), and a decent array of elemental and perhaps physical resists as tanks. Pure Eva is way too inconsistent for anybody to rely on alone now.
Also, I think you didn't put down the certificate combinations for BD:
Smile + Calm = 6% added Crit Rate when using Dancing Blade
Nimbleness + Dancing Master = +8 seconds duration on Dance of War
I personally think that the time increase on Dance of War is better since you'll get a 6% or higher bonus on ALL your skills when it is active, not just Dancing Blade. It's definitely the better choice for PvP situations since you don't want to waste a certificate for malice reduction there. With this combo set up, Dance of War is active for 28 seconds of its 30 second cooldown, so you only have to live without it for 2 seconds each cycle. It's critical for any type of build.
Also, list which certificates are good for Blade Dancer, mainly from the Range DPS and Melee DPS branches, but there are Evasion certs from Bard and Knight as well. Crit Dmg from either Samurai or Hunter, Luck from Hunter, Crit Rate from Blade Dancer and Engineer, Str from Martial Artist, Agility from Thief (gives more Eva than any of the Eva certs for me using Crit gear), and the Atk Speed certificate from Ranger. Atk Speed became more viable with the Ranger certificate (15%), Legendary Achievements (10%), and weapons that have powerful effects when striking with autoattacks such as the Awakened Dagger, Rapier, or Bow. It also helps to use an Atk Speed pet (Bunny gives Atk Speed + Crit Rate as a prime) and the Ice Meteor for +8% and + 5% respectively.
Might also want to mention Glyphs if you didn't already. I personally use Flashy Charm Glyph for the extra Crit Dmg, but if I was serious about my Blade Dancer (and I will be once I finish more Legendary Achievements) I would use the one for Firebird Dance. It's range will be incredible with it.
Also, you should consider listing the related legendary achievements associated with Blade Dancer such as Mining and Summoning for Str, Agi, and Luck bonuses. Ring crafting gives up to + .15 Crit Dmg/M-Crit Dmg points, Necklace crafting gives up to 10% Atk Speed/Cast Speed, and Gem crafting lends a nifty 8% movement speed. Crafting Swords for that 15% P-Atk bonus is a must. Your secondary weapon is probably either the Awakened Dagger or a Club if you main BD or Thief, or a Cestus if MA was your focus. 15% on the other weapon type is also good. Resists from crafting Heavy Armor and Cloth Armor as well as the Evasion from crafting Light Armor also helps a lot.