Are there any other downsides of the Multi-Issue DSC-TR Process than inability to provide any information about the client’s underlying traumas, specifically, which does build confidence by giving confirmation that something important was reached and worked on?

We see no real downsides here in using the streamlined approach, especially as more can be accomplished, given the capability of the deep subconscious to multitask to a much greater degree than you are accustomed to using your mind on a conscious level. This takes some getting used to, but you will find that there will be no complaints from the deep subconscious you work with, that it is being burdened or you are asking too much of it, and that is valid feedback, to see things going in a straightforward manner.