Interesting project. I am assuming this is not geared towards business clients who print thousands of labels a day, but more of a fun things to print to thermal printers for individuals? Correct me if I am wrong.
I like the twitch stream, fun approach.
I've wrote quite a few labels in ZPL, which is used for Zebra printers. The reason I've used ZPL code is that serialization happens on the printer itself. Therefore, it is an easy fire and forget.
Can this integrate with a zebra printer? Can this handle large number of prints? Serialization?
I am using Printercow for another project of mine where I developed a POS-system where many thousands receipts need to be printed. This was one of the motivations. AI was kind of a afterthought. :P