FireLance
Legend
I think themes as a concept made their debut in the Dark Sun campaign setting. Since then, they have appeared in various Dragon articles as well as the Neverwinter campaign setting and Heroes of the Feywild.There already are themes in 4th Edition? I never heard of that. Can you tell me some more about it?
The Dark Sun themes are probably the most comprehensive, offering a fairly weak encounter power and power swap options for encounter and daily attack powers and utility powers. Subsquent themes (possibly to mesh better with Essentials classes) provided benefits at 1st, 5th and 10th level, and power swap options for utility powers.