I've been a Bladedancer main since the early days of Destiny, in PvP at least. Over the course of 2.5 years, it has seen nerfs to the following:
Arc Blade damage
Arc Blade duration
Arc Blade swipe super usage
Arc Blade hit detection (now fixed, kind of)
Arc Bolt Grenade damage
Arc Bolt grenade radius
Skip Grenade damage
Skip Grenade tracking duration
Skip Grenade -1 tracker
Flux Grenade magnetism
Blink distance
Blink preparedness time (x2)
Blink cool down
Blink -1 recovery
Blink removes HUD
Quick Draw ready time (x2)
Blink Strike range
Blink Strike Escape Artist activation time
Blink Strike Backstab activation window
Blink Strike Fast Twitch cool down
Stalker activation time
Hungering Blade health regeneration
The only skill perks that haven't seen a nerf are Showstopper, Fleet Footed, Shadow Jack, & Encore.
Staggering, really.
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I was using encore in pve and it's great but not being able to use hungering blade is risky. I think they should revamp the mask of the third man to "grant encore" instead of what is does now, that would make the BD so much better in pve