Why is there a button for Attack of opportunity?

Why is there a button for the rogue sneak attack?

If someone moves away, just ask if I want to do an Attack of opportunity.

If your rogue can do a sneak attack, WHY WOULD HE NOT DO THAT?

These buttons are useless. The UI needs a major upgrade.

Why is there a jump button? If I want to jump somewhere, I can just click on where I want to go and the character should go there (auto roll check).

Why do the spells need to all be listed on the bar? Magic Missile 1,2,3,4 etc should be one button. You click on that spell, a small pulldown asks which level you want to use.

If I want my party to sneak, there should be a party button for that.