- achievements [because these were just fun completionist things]
- autoreplaced spell ranks
- barber shop [because fashion]
- cooking daily quests
- dual specs
- enhanced stat tooltips
- enhanced player portraits
- fishing daily quests
- guild bank
- improved flight paths [;___; why do I fly through Crossroads for everything???]
- late BC-early WotLK balancing [where most specs were viable]
- late BC talent trees
no summoning stones, no group finder, no queing for BGs from anywhere- basically nothing that removes the requirement to congregate in certain areas of the game or communicate through chat.