Rewards you get are related to Red Dragon and are good enough. Reward already includes a number of useful things, as: 4000 Honor Points, Locked Gold Crate (x2), Red Dragon Spinal Ridge Shard (x1-4). Plus you get a chance to get more valuable items, such as: Red Dragon Spinal Ridge (x1), Evenglow Lunagem: Impact (x1) and Enraged Red Dragon Weapon.
No additional rewards will be included or existing rewards buffed.
Red Dragon was never a boss that took 5 minutes to kill but required time and efforts.
But, Red Dragon HP and harpoon damage are 2 things we will consider changing, so the general time players spend in that instance would be reduced.