Just to respond to this specifically about wizards, and sorry for the delay:
Features like “Add Equipment to Model” and “Create Equipment from Thing” are wizards of sorts, because they deal with multiple entities at once (fill out a form, have items and links created for you).
There’s a first-time user wizard, but it’s deliberately kept to the bare bones because it might annoy if you stretch it too much.
What I very much had in mind, though, is a wizard that could bootstrap your initial skeleton of a semantic model (at least the hierarchy of locations and such).
This could be offered when you go to Settings > Model and there’s nothing to show - you would have a button to start the wizard.
As for wizards that could go from discovering a Thing to using it (items, rules and all), I had this in mind too - we could import “packages” from the Marketplace which could define things, items, rule templates, main UI widgets, block libraries, etc., and then have wizards so a single form would create instances of all of these at once.
But it’s kind of off-topic from the title of this thread IMO, the discussion has shifted from “OH needs more marketing” (like, bi-weekly blog posts?) to “OH is too complex to use”.