Domain management.Absolutely!!!
what do you mean though? Care to share any specifics of what you want?
Warfare/Mass Combat
Stronghold construction and management
Environmental rules, including for planar adventures
Robust economy guidelines so treasure has a purpose
Expanded travel rules including "journey" style mechanics
Downtime rules that actually work
Campaign creation and management tools
Relics, rituals, and general expanded magic options.
Like that.