It has long been our philosophy to deliver features that are well documented, tested, and useful. On this feature, we didn't nail the documentation, and we'll improve it.
We also have try to approach features - especially those where you can imagine different versions with varying levels of complexity and utility - as ones that we can build on over time. In the past, we've sat on features that weren't the most complete version that we could imagine, and then have turned out being wrong to boot. So these days, we're trying to deliver smaller features, see how they're received, and grow them in the directions that the market desires. And we explicitly use you guys - our customers - to help guide where we might build on features to make them as good as they can be.
In the case of HITS, the original version was slated to be SkyView flight plans at the altitude bug, with no vertical guidance. You could reasonably argue that this is the feature-set we should've initially released. It would've been simpler to explain and understand, and it wouldn't any IFR navigators
Along the way to v15 way - as SkyView's VNAV features were being improved - we realized that we could add that guidance to HITS at the same time without much additional development. Same for the lateral guidance from external IFR navigators. The vertical guidance from those have additional technical complexity, so that didn't make it in. So we ended up in a bit of an awkward place here - as some of you have pointed out - and the documentation issues exacerbated it. So sorry again for that confusion.
All that to say - thanks for your feedback here!