There is one considerable downside to this, however, mainly, you have to level up from 15 to 55 on each of the trees you want to use (players will often stick to their three preferred skill-trees and swap them only after they reach level 55 and want start to do some grindy end-game stuff). This bumps your character's versatility and adaptability to a whole new level - you can tailor your build as you go and adjust it for any situation. After some #quickmaths, we get a total number of 220 unique and different class choices! But wait, ArcheageUnchained class system does not stop there on top of all this, you can freely swap out a skill tree for another one. and you select three of them at a time to make your class. In these two games, you have a choice of 12 unique skill trees. The real game-changer in this regard was the system introduced in ArcheAge, which was later re-released in ArcheAge Unchained with some minor tweaks. In most old-school MMOs this 'freedom' was reduced to the class choice on the character creation screen and an occasional secondary class choice sometime during leveling.

MMORPG Players like to have freedom of choice when it comes to character building and possible playstyles.

Escape from tarkov character creation