I like this, I like wizards being able to learn any spell off a scroll... I like it a lot.
I do too, though I know it's not True DnD by a long shot. We should enjoy it while we can!
Wizards are all about mastering magic and seeking out forbidden lore and stuff they couldnt learn normally. I have incorporated a rule at my table that lets wizards add any spell to their spellbook, if they have a scroll or a way to find that spell... but they have to pass an arcana check (in normal 5e, wizards have to pass an arcana check to add spells on a scroll, but only wizard spells... I remove the check for wizard spell scrolls, but kept it for non-wizard spells... representing a challenge to master things outside of what wizards know)
It has worked wonderfully at my tables and has done a lot to provide motivation to my wizard players to seek out the magical places and people of the world.
As for the blending of classes? I dont know, maybe spell saves and attacks should be MUCH LOWER, like ridiculously low, for non-casters using scrolls? and casters should just use their own modifier?
