Nice, to follow the naming convention of other utils folders here, how about mlir/utils/vscode/mlir.natvis ? (or s/vscode/vstudio/? I don't now who which is considered more general/common in folks minds :)).
That would make sense, though I do worry about breaking devs who wouldn't be expecting their natvis files to move...ultimately up to you :)
Thanks! Based on the git history of the other two natvis files being referenced above, I'll add Mike Spertus.