I got the impression that Kahn utilizes the scripting of both Rebirth and Regeneration both, but packages it with both New Dawn and additional technologies. A main reason I picked it up was I thought it’d be smoother and easier to handle, and I was not disappointed. I’ve had no major reconciliation to handle on Total Breakdown. None I could even mention.
I’ve faced the issue of accepting the discomfort with major changes, but it has not hung on me like a lead weight. Kahn has been very smooth so far, and I’ve only had about 2 emotional flashbacks, which were not overwhelming at all. In fact, I was rather perplexed when they came up, for I expected something along the lines of “you’ll remember this, and get DRAGGED back into an old time period mentally”. Nope. I felt some of the old pain, but it didn’t own me. I had control, so I allowed the feelings to stay, knowing I could get out if desired. It was freeing.