I apologise for weighing in, as I am perhaps not aware of all the factors relating to this issue, but having dealt with HeroLab, DDi, and 4e dataset import all day, I can confirm that
Character Themes (currently 116 entries) are contained in the DDi Compendium.
Indeed, I believe that anyone can actually view the index of the DDi Compendium
here (direct link) without a subscription. You will not be able to see the content of the entries without a subscription.
As I can see now, the DDi Compendium includes the following:
- Backgrounds
- Character Themes
- Classes
- Companions & Familiars
- Creatures
- Deities
- Diseases
- Epic Destinies
- Feats
- Items
- Paragon Paths
- Poisons
- Powers
- Races
- Rituals
- Terrain
- Traps
... as well as the Glossary from the Rule and Source Books, Campaign Settings, Printed Adventures, and Dragon Magazine (up to issue #426).
I hope this helps.