Which to choose could depend on the logistics involved in producing another line of salsa. With another fresh ingredient comes continual supply, storage, and consumption factors, "just in time" stock, and a 2nd production line splitting off at the point the fresh super hot peppers are added. This route should provide optimal taste of the super hot pepper.
However if your existing salsa tastes *good enough* already then dried or powder starts to make more sense, as it can add the heat without the significant supply timing and storage issues, and can be added to your current salsa at the last stage so you have just the one production line for both but adding the super hot dried or powdered at the end of the line to some of it.
You should try it both ways and conduct taste tests.