I have the same desire. As a user, I would be willing to sacrifice having a single continuous "sectional" for being able to include the legends, or at least a way to choose one option or the other. One that theoretically could be done is just the TAC charts, as there isn't much overlap to speak of.
For me it's not just the MOA/RA info, but also the images that show the procedures and relevant info for TAC VFR transitions. Without this, I have to load up a separate app when flying over PHX or LAX, which is not nice since I really want to keep AVARE on top for awareness.
-Brian