Disagree. My spell inventory is maxed at Legendary Northelm, I have no duplicates of any spell, and I am continually throwing away new copies of spells that I am obtaining.
The current limit might be okay if a player is only playing a single class. However, the limit is quickly reached when playing multiple classes, as each class has unique spells. Plus, as stated on yesterday’s stream, there are more classes coming in the future which means even more spell inventory will be needed to hold their spells as well. Even further, the game’s achievements award players for maxing out class specific spells, so that is incentive to not throw away perceived “useless” class spells clogging up spell inventory spaces.
