I agree, I am fine with some changes here and there but some of the things really baffle me.
It is also frustrating to find some skill missing or drastically altered and then not know if this is a deliberate change, or if its just a placeholder mechanic that will change later on.
For example reaction spells like shield isnt implemented and this becomes kind of a big deal given that abjurer is one of the included wizard subclassses. At first I thought shield was just not implemented yet, but then I realized that there are other reaction spells present such as hellish rebuke, but hellish rebuke isnt coded as a reaction. Battkemasters can enable riposte as a reaction so why wouldnt hellish rebuke be coded the same way?
I would be very happy to see a community update that talks a bit about what rules are deliberately changed and why, as well as some mention of things thatbare just missing or using a placeholder mechanic.