A Station Eight Fan Web Site
You refer to Demona and Macbeth as "foot-soldiers" in the context that the Weird Sisters used them for (or sought to use them for). Isn't that a bit of an under-title for them? Why go through all the trouble of obtaining Demona and Macbeth if only to use them as "grunts"? First off, isn't the entire purpose of foot-soldiers/grunts to have a lot of them? Merely two suggest specialization, and indeed, they seem to have been chosen because they were special. What was the Archmage's motivation behind obtaining these two in particular, and any two in general? Did he just not want to have to get his hands dirty with "menial" tasks? Did he want the ego boost of having underlings? Were Demona and Macbeth candidates because they were "the best" and therefore more of an go boost?
Terms like "foot soldier" and "cannon fodder" were clearly used by the Archmage to make him feel more important. In fact, he was cherry-picking very talented warriors.
Or one might argue, he had nothing to do with the selections. How did he even know about Macbeth? Sure his older self told him, but how did he know? Sure HIS older self told him, but how did he know? And so on, and so on, and so on...