I found spellcasters to be just fine. And wizards are obviously going to get really powerful as the game progresses to higher levels.
Clerics actually have a ton of great equipment
Ring - that adds bless when you heal someone
Gloves - that add resistance to all physical damage when you heal someone
And there are a bunch of cool simple weapons for clerics.
Mace that adds 1d8 necrotic damage
Mace that applies faerie fire
Axe that applies fire/burning
The shattered flail
And a couple of cool spears if you don't want to use shields.
