My answer was going to be "soloing", but that's pretty accurate too.

Druids didn't get anything because so much of the original WIS caster itemization was already perfect for the class. This was a bad situation for clerics in particular because they could not take advantage of an important class benefit, the ability to wear plate.

The situation actually got a good deal worse in the Velious era when WIS caster AC softcaps were achievable with leather gear only, making the cleric ability to wear plate a liability (heavier class armors) rather than a benefit.