Would this process of fostering cooperation between the deep subconscious and the higher self be aided by our channeling the higher self of a client first, and request on the client’s behalf that it do everything in its power to assist and promote healing of the deep subconscious?

This is quite true and this is the genius of your additions to the Lightworker Healing Protocol to request the spirit team including the guides, guardians, and higher self to initiate when appropriate, an interaction for learning and growth through the empowerment done as an advocate on their behalf. When you are facilitating a healing session with the Lightworker Healing Protocol, your mind is a reality. The changes with new aspects that have been added to the mix will only widen the array of choices and opportunities for growth and increased sophistication and a successful change for the better coming from those parts of the mind who may seek control, but do not have the wherewithal to always prevail. In most cases, the conscious self will reign supreme in making key decisions, but this is not always the case. The difficulty always in dealing with differing levels of the mind is the knowledge base, and the ability to reason with maturity and sophistication. Because the deep subconscious is used to operating much of the time dealing with fantasy, it will struggle when expected to work in a literal fashion on prosaic issues presented to it to streamline the communication and make it an effective collaboration leading to healing inner tensions and conflicts inherited from the life difficulties of the past, but this is doable and can be worked out successfully.