Taking a cue from cli shells, I wonder if it would be possible to get tabbed autocomplete or minimal dropdown support for OP path parameters. Tabbing would guess based on current incomplete string, and repeated tabbing either cycling match options or going deeper in the component tree.
I initially wanted to ask for this functionality while writing an op() python reference but I don’t personally know how I would implement something like this without messing with arbitrary python input. Still, wishlist!