I was able to solve the problem, with a big help from
@GABO1423,
@GaryOderNichts, and, yes, even
@NintnedoGuyin66, whose heart was in the right place and worked to reach out to help get to a solution, and a guide is now impending, so lets all get along and focus on solutions~
Now, onto the next horizon...
Jemma's posts about supporting drawings on page 2 has captured my imagination!
What would be the correct way to format that when editing the xml? Does it just link to any image hoster if it's the correct dimensions, does it need to be transferred to the nand or what? (edit: I foolishly only read closely the parts of the OP that pertained to me when last referring to this topic, so I see now the conversion script for icons she referred to. I'm a little unclear on if that spouts out basic incomprehensible code that can be used as image text or what, but stumbling through the process will make that clearer to me soon)
I wonder how much the url fetching can be altered for jemma's xml generator program. My head is awash with ideas of beautifying my warawara with a 'best of' collection of miiverse sketches, or at least a random smattering from Archiverse or somewhere like that. That's the one thing that's been lacking with this lovely new solution to the stark wasteland nintendo left us - the artwork was definitely a big part of the miiversonality.