As an aside, I think it's funny that making 'Tiers' jargon for level bands has finally caught on enough to make it slightly harder to talk about Class Tiers. The Wizard is still solidly Class Tier 1, given the unprecedented versatility of prepping daily and casting spontaneously, it'd be Tier 0 if spells had proliferated in number & power the way they did in 3.x, but it's place on the top of the heap is the same as in 3e, either way. Really, the Bard is the only class that's dramatically changed in the rankings since 3e, though most boats have been floated on the rising tide of increased versatility, loosened restrictions, and spells for all. Like, it's hard to put any whole class at Tier 5. The Champion and Berserker may arguably languish there, as sub-classes, but they're pretty lonely. Nothing is so badly designed as to rate Tier 6, not even the Ranger.