I think there were two glaring omissions that the wizard class had in that UA.
The first is that there were no non-ritual spells that got the ritual tag. The wizard ritual caster is different from every other class granted ritual caster ability in that it only needs to be in the spellbook not prepared, this is great up ntil level 3 spells where a wizard could have pretty much every ritual spell available if they wanted. After third level spells they pretty much stop being ritual.That could be fixed by adding the ritual tag to some or adding a variant ritual tag like "greater ritual" or something that takes more time (ie hours instead of minutes)/possibly even resources.
There are plenty of spells that could easily be ritual under one of those two thoug... For example Darkvision, zone of truth, dispel magic, project image, astral projection, Knock, teleport, detect evil and good, sending, locate object, magic aura, scrying, find the path, create food and water, transport via plants, hallow, mighty fortress, magnificent mansion ,tongues, arcane eye. Yes some of those spells are also available to other classes & maing them ritual would be a boon for those classes too, but none of them are spells that are really balancing concern ones.
The second omission is more of an oddity & probably oversight rather than omission, unfortunately WotC continued with Scorrlock having most favored class "dating the GM" status by having the dramatically improved version. Multiple classes got "Whenever you gain a level in a class that has $feature, you can replace a $option of that $feature that you know with another spell/cantrip/fighting style available to your class. Classes with fighting styles can swap those, prepared spell classes (cleric/wizard) with cantrips can swap cantrips. The problem comes with sorcerer & warlock can replace a leveled spell during a long rest giving them limited access to the kind of versatility Grated by a wizard's spellbook; that is fine& reasonable since having their spells locked until level up was a bit too restrictive for inexperienced players & players subjected to dramatic gamestyle shifts. Bard Ranger & Pally got to replace a leveled spell during a long rest, also reasonable for reasons stated. Cleric got the ability to change a cantrip when they level, this is great as a divine caster who always has access to their entire spell list when preparing spells during a long rest. Wizards get the same thing as clerics but as a class that has the cost of scribing spells to their spellbook who already pretty much had a massively expensive & limited by treasure availability version of what everyone else is getting it's unreasonable to limit the wizard cantrip versatility to level rather than long rest like the scorlock spell versatility abilities.
