these skills are in the game PA

So do gaps in every none succession skill, PA doesn't care about, most likely they don't have person who can take care of this even if PA wanted  to, they not going to rework DK from scratch to fix problems.

Vedir's Dogma: should apply either -5% evasion, +5% accuracy or -10DP to target when being used to keep it useful for both pvp and pve 

Impervious Command: Allow all skill other than Impervious Command to be able to apply the mark and can only be consumed when using Impervious Command. Should give super armor ("Impervious") when used and apply a stun to targets in range or if that's too op, apply a 20% slow and -3% evasion debuff lasting 5 second. You can easily be grabbed while casting during it's long animation but I think it could help her be more useful in group pvp content.

 Spirit Satiation: While channeling, should give you 2% movement speed and .5% atk/cast speed every second capping at 10 seconds of channeling for a total of 20% movement speed and 5% atk/cast speed lasting 15 seconds. This skill leaves you wide open but since DK's roll is flanking, it should help her get in and out of combat, she can channel this ability while waiting for her opening to engage in combat.

Let me know your thoughts?