I Think that the DAO should sent the Hive-token and BEE-Token first to splinterlands and only afterwards the DEC-token. I think the DAO should keep the DEC as long as there are token like HIVE and BEE in the wallet. With HIVE I mean the liquid HiVE not the HIVE-Poer, so if the DAO need HIVE-Power for ressource credits than the neccessary amount should be kept.