"Spell School" adept feats are designed horribly in the new Arcana Unleashed book
Edit: I am a Wizard player so super happy about this book giving so much love to Wizards
Especially the Conjuration and Evocation adept ones are straight up bonkers. Conjuration gives Misty Step, Entangle, Dimension Door, Conjure Animals and Conjure Elemental (no free casting bur oto preapare) and gives a bonus to your concentration checks you equal to thr ability score you increased with this feat if you are concentrating on a conjuration spell. This one is actually not that broken and tailor made for Conjuration and Shephard druids. Also good for clerics who wants mobility. This feat is %80 of the time better than fey touched or war caster.
Evocation adept straight up gives you acces to spells like WALL OF FORCE, fireball, shatter etc.(And a side bonus which is nothing crazy)The wizard exclusive spell that makes them keep up on combat side against classes like sorcerers or warlocks. A sorcerer taking this feat would be just better at everything else except utility.
Other schools are fine maybe except for Transmutation. I actually really like enchantment and illusion ones cuz they give super cool spells and makes you able to ignore components on enchantment/illusion spells (ofc u cant ignore costly material components). Which actually gives Bards/Wizards who lean onto those schools a really good way to use them more subtle. I will def take thr illusion one on my Illusionist wizard one day.
A wizard taking these spell school adept feats benefit the most tho cuz they can learn other options when they learn new spells from level up and they get to prepare significantly more spells each day. Especially the Divination Adept feat makes you able to grant adv/disadv on demand once per long rest BUT this recharges if you cast a divination spell. Divination School Wizards are keep winning...
My biggest complain is that WOTC gives casters this versatility and bonker feats but thinks giving rogues a fighting style is too op oder giving Martial Afept feat more superiority dices would make them too strong and steal "Battle Master's" identity. Like these new adept feats doesnt steal Wizard's identity. IK this game isnt meant to be balanced and this is an "Arcane" book but im talking about general WOTC design behaviour hier.
TL/DR: New feats didnt help closing the divide between martials and casters and made Sorcerers and Wizards a lot more powerful