Global gnc_collection_get_pricedb (QofCollection *col): Collections of prices are not destroyed fully.
Global gnc_lot_make_default (Account *acc): Document this function ?
Class GNCCurrencyAcc: This structure and the non-GUI code that computes it's values should move into the engine.
Global xaccTransRollbackEdit (Transaction *trans): Fix transrollbackedit in QOF so that rollback is exposed via the API.