My boats breaker panel is such an unholy mess that it is almost
impossible to remove and get enough service slack to do any work.
There are numerous problems ranging from the battery leads being too
short to impossibly stiff (non marine ) wire. I am going to get longer
battery leads, but for the low amperage circuts, I am thinking of
running all to terminal strips behind the panel and then run new,
appropriate length, wire from the terminal strips to the panel.

Am I looking at any current loss problems with such an arrangement?
Any other ideas as to how to reorganize the panel?