Hello!
Present my model of the return dungeon as an alternative "Sea of honor"
Kezzel's Gorge (5-7 players) - upgrade / upgrade to level 70.

My upgrade option is passing on points + time, provided that Kezzel is immortal:
Example
- 1 blow to the boss 1 point;

- hit / damage from the one Cannon 2000 points;

- kick / damage from a barrel explosion of 2500 points;

- hit / damage from the drill 3000 points.

- + 30sec passage -1000 points (so as not to be abused, if the boss gets into trouble)
Depending on the points scored + the raid’s passing time receives ranks A, B, C for which rewards are awarded.
Kezzel's Bronze Chest, Kezzel's Silver Chest, Kezzel's Golden Chest + event tokens + 10 emeralds.

Guaranteed chest rewards: 1,2,3 "Exodor 0-9 Enchanting Scroll [Superior]" respectively + additional random:
"Improved Dark Shard Armor and Weapon Feedstock" (4-2pcs), "Exodor Armor and Weapon Enchanting Scroll [Superior]" (4-2pcs), Amarun's relic, Ishara's Halidom.
Additional motivation: overall rating.

Top 3 by the number of points scored:
top 1 place - "Dark Shard Enchantment Box" to each player
-2 place "at your discretion"
-3 place "at your discretion"
The number of visits / week - 1/2 times + "[Party] Instance Reset: Kezzel's Gorge" in Tera shop.
Thank you the attention!