No livewriting tonight... and request for guidance (Patreon)

So- yeah, it's cold today and I'm mostly motivated to stay as still as possible to retain heat. 

But while I'm staying warm, I want to get some input from you about what my second-tier pony project should be while I'm editing the next chapter of CSP. Here's the options:

THE MELANCHOLY OF PINKIE PIE- It feels good that I wrote almost three thousand words of it last night, but it's far and away the least popular thing I've posted on FimFiction. Also, although I have a pretty firm idea of what's left to it, there's the stumbling block that killed momentum on it the first time- I have to write at least two, maybe three more original songs. As in, not rewriting lyrics for "Bokuen Desho Desho".

DOCTOR WHOOVES: THE FIVE DERPIES- I've been kicking this one around in my head since before I began CSP and the Maretian, but the idea isn't fully formed even yet. I'm building around a gimmick, which is why I have nothing beyond a page of notes. 

DIARY OF A MAGIC TYRANT- You caught a glimpse of this towards the end of The Maretian. I wanted to explore the alternate world where Nightmare Moon takes over. Unlike the first two ideas, it doesn't depend on songs and doesn't need to have the plot carefully mapped out in advance. However, the concept threatens to become another daily-updates thing, which makes me skittish.

Which of those ideas appeals to you as a backup for CSP? Or is there something else you want me to try?