Thanks all,
Here is an updated list (I've left out things like no Kunark, Iksar, Velious, Planes etc.) :
- No soul binding
- No mail delivery quests
- No maps
- No compass window
- No pet window
- No tab target cycling
- No moving spells in spellbook
- No numbers for HP or mana
- Only 6 hotbar buttons
- Only 4 mob AE
- Spell book meditate
- No mouse wheel 3rd person (?)
- Classic darkness (?)