They are the foundation of the PanOptic method but I have integrated about 80% of what they do into the ichimoku elements
So you will be fine without them but they provide a deeper understanding of what is happening and what to expect
I noticed that you have not described the importance of SSA. Do you think it is not important (except for the kumo)? Do you consider it provides informations of a time harmonic in the middle of those described by the TS and KS? Any other suggestion on how to obtain informations by the SSA?
Thanks and again my best compliments for your tireless work: you've improved my understanding of Ichi a lot.