I don't like that it uses blue swooshes. It's too close to reaper's teal aoes, even though this was effectively for the Viper version of Enshroud. How about green or orange.

I hope viper has some unique something-somethings. Melee DPS has Leg Sweep already, but perhaps an AoE stun aswell would be nice, like White Mage's Holy, something you don't need to use to play the role- but can be quite useful in certain scenarios. Perhaps it could stun and give regen potency or time based on how many enemies were stunned/hit, with a 45 second cooldown? Make sure healer regens don't cancel/override it.

A 'vault' skill that has you to use the joined swords to get off the ground to dodge a mechanic you are standing in (and helicopter blade-it down to the ground for extra air time lol).

Provided Viper brings a few new tricks to the table that no current job has, that would allow you play dungeons/mechanics in interesting ways, I'm in.