Hi, thanks for reaching out.
Wouldn’t a static front-facing sprite just be the front-facing idle sprite, or do you mean something else. If so, TDSM does let you choose which directions and animations to export, so you can already limit the export to that single sprite, since the idle animation is only a single frame in this case.
I’m actually hearing about Picrew for the first time. But no, I don’t see myself making a dedicated avatar maker in this style.
I’m actually releasing a major update in a couple days at the latest that will make it possible for users to make and upload their own styles to TDSM. Using the tools that already exist in the program, it will be possible for you to make your own avatar styles.
Let me know if that addresses your question :)