When is it worth to use entchanted reprise?

[Hikelos]

Just like Engagement, Enchanted Reprise's only use is to fit into a specific niche scenario to let you keep consistent uptime.

Example: Targeted by Innocence Tether, Swiftcast on CD, using Enchanted Reprise is better than just running to where you need to be without casting anything.

It's not meant to be a tool to spend excess mana, or to be a DPS gain on its own. It's basically Scathe, and you want to avoid using if possible, but to use it if necessary.
The only real issue is that it does delay your next melee combo, which is pretty punishing.

[Zyneste]

Just like Engagement, Enchanted Reprise's only use is to fit into a specific niche scenario to let you keep consistent uptime.

Example: Targeted by Innocence Tether, Swiftcast on CD, using Enchanted Reprise is better than just running to where you need to be without casting anything.

It's not meant to be a tool to spend excess mana, or to be a DPS gain on its own. It's basically Scathe, and you want to avoid using if possible, but to use it if necessary.
The only real issue is that it does delay your next melee combo, which is pretty punishing.

Not entirely true with Engagement, although not terribly rewarding, Enagement can give you an additional 50-150 potency every manafiction cycle. [150 if manafiction gets pushed back from Mana requirements.] At level 40, it would fix so many pre-72 platform issues, while opening the skill slot for an OGCD support skill (I can dream ok.)

Engagement does provide an advantage beyond mobility, its a DPS gain with good use, because of the fast animation, allowing it to go into cool down. After using Manafiction, you should be using Engagement immediately after. Either during the same weave or right after Enchanted Riposte. From there you should be using Displacement whenever its cool down doesnt align with any other OGCDs, but it should always be used off CD, either as Engagement or Displacement. You have about ~5 seconds in wiggle room to squeeze in your weaves.

With Engagement: 0, 35, 70, 105. 600-700 potency.
With Displacement only: 6 [Melee combo pushes it back], 41, 76 [Manafiction comes off cool down before Displacement does.] 600 potency.

Reprise at the moment I agree. It is nothing but a VerScathe. Moulinet/Riposte fits the bill better for mana dump. It has its uses as a VerScathe, but its potential is very saddening.