Have you planned to release a 5.2.3 release?
Where can I know roadmap for 6.0 features/releases?
Have you considered to expose GdaDataModel from results to update GdaMetaStore? For GdaData vala classes, I'm using GdaMetaStore to get database structure, but it should way until GdaMetaStore updates a SQLite internal database to finish in order to get required information, but because GdaMetaStore gets from the database a GdaDataModel with the structure, then translate to SQLite, GdaData vala classes could use returned GdaDataModel "before" or remove the use of GdaMetaStore, in order to speed up database structure's metadata retrieval.