In a situation where the oil and gas industry now more strongly than ever before, asks for research and technology development towards systems, methods, and equipment to reduce CAPEX, OPEX and the environmental footprint, the ongoing “electrification” of subsea functions through a transition from electrohydraulic to all-electric control systems constitutes an important contribution. However, merely changing the control system platform without simultaneously challenging the design of mechanical parts, system interphases and current design practices, leaves out a significant potential for further improvements:
•    Making currently non-retrievable components and systems like Christmas trees (XTs) designed for 20-30 years of life, more easily retrievable and replaceable at low cost using smaller vessels and fewer marine operations. 
•    Moving/shifting functionalities from XTs towards and onto separate bridging modules and/or manifolds, reducing unit size and weights of XTs 
•    Replacement of steel with other and lighter materials 
•    Re-design of Fail-Safe-Close (FSC) valves and actuators for low power operations and easier and less costly retrievability