It could work if done right.

Maybe some crafting or gathering bonuses (like, 5% HQ chance in the area for the titles like Forestreaper, Desertbreaker, Medowcaster, etc), faster mount travel speed, increased trash item drop rate off certain mobs, cosmetic bonus (maybe a slight glow to the eyes that matches your soulstone color with the lv60 title), FATE XP bonus, stuff like that.

Nothing that affects combat directly (attribute bonuses, acc/crit buffs, etc) to prevent that abuse from happening.