Mod - "Ultimate Hero"

[Keneth]

They allow you to level faster which in turn makes it easier for you, that was always their purpose in the first place. And there's no point in leveling spirits past lvl30, by that point you should have maxed out all useful abilities, in best case you would get to upgrade even the useless ones and in worst case you would be forced to choose upgrades that you don't want (you don't want to max all abilities because they're better at lower levels).