Thanks for the feedback.
The particular area that Lightroom is fairly weak in, particularly for higher dynamic range images, is the clarity slider: I'd prefer a bit more control. Nik has its tonal contrast filters. Topaz has Clarity and Detail. The Macphun filters seem to have Structure, Detail, which seem to offer greater control, which is what I would like, to avoid the need to brush local contrast in, so have more selectivity.