I agree with points one and two, but I think the "Resurrection" scrolls are a necessary weasel to prevent player frustration.
I definitely agree that it's too easy to disengage and that takes away the value of positioning and class identity. Jump distance IS based on your STR though - higher STR characters can jump farther.
I'm not entirely sure about the special abilities. The fact that they're limited to one use per short rest seems to be a reasonable tradeoff between giving the player more options to make them not so bored, and not giving them too much power.
Speaking of class specific toolset, what happened to the sorcerer? and why does the wizard behave like the sorcerer?
What do you mean? That Wizards prepare a spell once, and cast it as many time as they have slots, instead of preparing the spell for as many times as they want to cast it? That's how they work in 5e. Sorcerers get new mechanics to work differently.
Hopefully that is going to change. Not sure why Wizards get "attacks of opportunity" as a reaction rather than reaction spells, which fit a lot better. They streamlined classes way too much.
Spells as an AoO is from the Warcaster feat in 5e. I think the Reaction system is still a work in progress, and defensive spells as a reaction is likely a work in progress.
