Currently it seems that the Wizard and maybe the Cleric are missing spells or certain spells are a spell slot + action.

Suggestion: for spells like Find Familiar bring back the ability to cast it out of combat without using a spell slot ( currently as is for the Wizard) I am of the opinion that the familiar could be very useful but with game mechanics being the current way they are where the wizards familiar vanishes after a long rest (does not happen in DnD) having to use one slot to re-cast the familiar makes it worthless in it's current form. especially since the familiar can not deliver spells making any familiar that only has 1hp horrible. At least the Warlock gets to cast it for free and gets two options that is very helpful in combat/scouting.