I do like the way your UI strips out some of the ambiguity in how your initial prompt is interpreted by an LLM and allows for editing and parameterisation and IFTTT outputs. Especially since exactly how LLMs parse complex instructions is hard to test. There's definitely a sweet spot between "type instruction and hope for magical understanding" and "write the program yourself"

(though as it still involves LLMs I'd probably want to use it for stuff that sounds less mission critical than some of your examples!)