Positives of an I/L?

Then every class would be the same?

No, not the same. All the other classes train around the same speed and do about the same damage, but they're different. I just want smaller differences between magic and physical classes. Right now AMs train twice as fast as any class, but do the least single target damage by far. There should be differences in training speeds and bossing damage, but not nearly as extreme as they are now.