I am not sure if it has been mentioned in the 8 pages of comments so far, but there is significant nerf to possibly many classes/subclasses with this new non spell based attack stat blocks. I strongly doubt it was planned by WOTC, because, frankly, they are not that bright.
But visualize the impact on chars that have spells/effects/features like this one:
Aura of Warding: Beginning at 7th level, ancient magic lies so heavily upon you that it forms an eldritch ward. You and friendly creatures within 10 feet of you have resistance to
damage from spells.
Improved Abjuration
Beginning at 10th level, when you cast an abjuration spell that requires you to make an ability check as a part of casting that spell (as in
Counterspell and
Dispel Magic), you add your proficiency bonus to that ability check.
Spell Resistance
Starting at 14th level, you have advantage on saving throws against spells.
Furthermore, you have resistance against the damage of spells.
Those are three that I came up knowing what I know of Ancient Paladins and Abjuration Wizards. Are there more? You tell me.