Though I would love a Beastmaster class to be added to the game, where players can tame animals, there would need to be a Lore reason why it is added.

"Lyon, the greatest beastmaster from Garlemald and beyond rose through the ranks quickly and gained the respect he deserved among his peers."

"Lyon became one of a handful of powerful soldiers sent to lead Garlemalds troops to secure Bozjan, with great success. Though little did he know, the Warrior of Light [You] would be arriving on these very shores to liberate and destroy the Dalriada."

"Little is known of Lyon's apprentice - Lexan sae Balmung, who exceeded all his other apprentices with his knowledge of taming the beasts, dragonkin and undead against their enemies. Before the Warrior of Light arrived in Bozjan, Lyon told Lexan "Please, make sure the knowledge of beast taming is passed on to those willing to learn, find one that will make the world a better place."

What is the basics behind the Beastmaster class:
You can have 3 pets out at any one time - in a triangle - a tank, healer and DPS pet - the size are scaled automatically when in a dungeon, and may only show 1 pet instead of all 3 when in group content.

You can tame a variety of creatures from beasts, dragonkin and undead. PSA: Dragonkin requires Heavensward progression, and Undead require the first Eureka zone completed. Could be other taming creatures requiring certain progression.

Class Requirements:
Level 80 (any class)
Level 30 Bard

Story requirements:
Dalriada in Bozjan must be done once.

Bard and Beastmaster gear are interchangeable, but some might not be used by Archer class.