I like this, I like wizards being able to learn any spell off a scroll... I like it a lot.
And every character should be able to use scrolls, this was one of the worst design decisions in D&D 5e... so much so, that they created a new magic item in Tasha's in the form of spell tattoos that mimics the most common homebrew functionality of scrolls.
It sort of feels like this diminishes the specialisation/flavour of each class though if everyone can use scrolls (it's already bad enough with how the current combat mechanics do this to a degree as well).
Was it the case that in previous editions of DnD each class could use scrolls? I don't remember that being the case in previous BG games?