Is the deep subconscious acting as a gatekeeper to block conscious personal awareness of trauma history and the akashic records?

The Deep Subconscious is not a gatekeeper, because it has no choice in what it conveys and what it does not, for the most part. It can only convey glimmers of things through its intuitive reach, and ability to interact in the dream state, and be observed, on occasion, by higher levels of the mind, in action, so to speak.