My list of expectations is kind of a mix of things already said by others but i detail it here nevertheless:
- flanking instead of backstab
- instead of advantage/disadvantage for highground, a flat bonus
- disengaged untied to jump, make it a separate action
- jump as movement, no micromanaging
- no more food during combats
- reactions with pop-up to increase player involvement in combat
- overhauled resting system to make resource management a meaningful aspect of gameplay
- fixing that wizard can learn any spell
- improvements/overhaul how to manage actions (hide, move) by characters/party
I will be already happy even if the above are not added as default but as optional
