  Neutral particles capable of travelling cosmic distances from a source to
detectors on Earth are limited to photons and neutrinos. Examination of the
Dark Matter annihilation/decay spectra for these particles reveals the presence
of continuum spectra (e.g. due to fragmentation and W or Z decay) and peaks
(due to direct annihilations/decays). However, when one explores extensions of
the Standard Model (BSM), unexplored spectra emerge that differ significantly
from those of the Standard Model (SM) for both neutrinos and photons. In this
paper, we argue for the inclusion of important spectra that include peaks as
well as previously largely unexplored entities such as boxes and combinations
of box, peak and continuum decay spectra.
