Sentinel have bladedancer and seeker class which is pretty simple to play just use few skill and auto attack the enemy. While the simplest legion class like rogue, chieftain and reaper need to tap many button to achieve effective play style. Seeker class is too good of a class for solo player because it is so simple to play yet also very effective. You can use invisible, escape with high speed, deal high damage and do everyday quest very fast because of invisible + movement speed boost. There is no legion class that could compare to seeker efficiency. Rogue has no movement speed and teleportation is restricted to a target. Chieftain have no invisible and mob can stop you from running by dealing basic attack. Reaper teleport have long cooldown.
TLDR:
I want at least one legion class that is ergonomic to play because of the existence of seeker that have attracted many players to join sentinel side by being very efficient to play.
Thats all.