I wouldn't mind letting players choose the option to automate certain abilities, provided it is *optional*.
It would make the game a bit easier for newbies.
Skilled players could still micromanage all abilities and be rewarded by their superior decision-making.
Let's face it, there is a huge difference between the skill levels of new and old players, and consequently of what they perceive to be fun gameplay. The system should accommodate both types of players. The OP's suggestions could accomplish that -- provided that automation is OPTIONAL.