Arelith

One of the biggest issues with vancian casters is the outdated, and arbitrary spells per day limit. Right now the meta is for casters to chug wine to lower their rest value. In addition to boosting certain classes pvp power (sorcerer especially) I believe this is a necessary change, here's what I'm proposing:
Spells are inficast first-seventh level
For certain casters a -inficast command is added opening a conversation of spell levels, allowing a pick
Wizards get inficast of their chosen school, generalists pick 2-3 spells per level.
sorcerers pick 2-3 per level
clerics get inficast of their domains
Favored souls get either sorcerer style pick, or cleric style domains
Druids also get to pick

This is counter to the value of those classes.
If you wish to play an infinite caster, there are options for that.
Making everything infinite at surface level can look appealing but it will eventually produce homogenous slop.

Some things already done that are relevant:
Greater spell foci provide an infinite spell.
Cantrips grant refreshes on a % chance relevant to class choices.
Specialist wizards can refresh any spell with the above % if it is their school.
Specialist wizards get 2 cd spells based on spec.
Clerics get refresh chance on relevant spells.
Clerics get infinite cd abilities based on domains.

Problems with making everything infinite:
All spells get nerfed to respect infinite casting, so everything becomes more flat and less interesting + reliant on spam.
Abjuration spec becomes kings of all as they get infinite mords under your list.

Of note, Favoured soul is arguably the most bland of all the list you wrote.