I would like to see updates to not only the Wyvern but also the Dragoon itself. We lack any real 'special buff' ability that all other melees have. Other melee jobs have Berserk,Warcry,Sneak Attack,Last Resort,Hasso,Souleater,Boost,Dodge,etc...

Rend
"The next physical attack will ignore the target's defense."
3 min recast.

Or another variation of this job ability can be a trait.

"Piercing Rend"
"Attacks occasionally ignore defense"

This trait can activate 5-10% of the time in a similar fashion as Double Attack, Triple Attack, Kick Attacks, Zanshin etc. When this trait procs on a hit or WS defense is ignored.

Another reason why enmity loss during Jump/High Jump/Super Jump is a useless enhancement to the DRG job is because most of the time when fighting HNMs in an alliance, mages are in a separate party from the melees. This means unless the hate shedding properties added to the 'old' jumps can work across alliances, it's completely pointless. Furthermore another reason why hate shed is a lousy idea for jump enhancements is that Dragoon's main priority is to deal damage meaning they will be using Spirit/Soul Jump as soon as they are available. No DRG will save his Jumps for when a mage pull hate because it would be an inefficient loss of potential TP and damage for the DRG.

One suggestion I can offer is decouple the shared timers of the old jumps and new jumps because no dragoon will use an old jump over a new jump. If the Devs want DRG to use the Old Jumps, then give them useful effects. Make Jump stun the target for a few seconds or make it not stun but give it an extremely(95%) chance to interrupt a target that's casting a spell. Give High Jump some kind of evasion or attack down on the target.

My last suggestion is to allow Spirit and Soul Jump to have the Wyvern special bonus attributes during Spirit Surge. While SPirit Surge is active, Spirit and Soul Jump cease to crit or give extra TP since the wyvern is gone, although technically the wyvern's spirit is absorbed into the Dragoon. Additionally, since Jump/High Jump/Soul Jump have special effects under Spirit Surge, give Spirit and Soul Jump a special effect too.