OK - it sounds like either you or I are misunderstanding the motivation of the clients in this given scenario.
To me, these people were not at all interested in the smaller items that an HI might find (to use your example: broken thermal seals and tripping hazards), and are instead worried that the major systems and components of the home are good. That is someone who is either a candidate for a BASIC inspection (if they want a generalist’s opinion of their electric, plumbing, etc) or a TECH (or exhaustive) inspection if they want a professioanl evaluation and money is not a concern.
Yes, TECH inspections are expensive. Yes, they do take some significant amount of coordination and manipulation to produce a concise and useful final report form several individual reports (that’s why you can charge more).
They are, however, lucrative if you have very high end communities in your area.
Now, if they just want a generalist’s opinion and don’t mind someone referring out evaluations of the specific systems and items (i.e “recommend evaluation and correction, as needed, by a qualified …”) then a BASIC inspection by an HI would be appropriate (assuming that they are not interested in, or can recognize for themselves, the items we listed earlier).
Since they went the route of seeking out contractors, that tells me that they were seeking a “specialist’s” (trade pro’s) opinion right from the start. They wanted a complete evaluation of specific major systems and components by a pro who would not refer out the work or equivocate about what they see and how much it will cost to repair. It does not mean they disrepect home inspectors, it just means they wanted something specific that most home inspectors cannot offer.
There are a lot of buyers for whom a generalist’s opinion is useful, informative, and appropriate. There are other buyers who want a specific professioanl opinion about specific items and systems. There are buyers for whom cost is the single biggest factor, and buyers for whom cost is no object.
For all of these reasons, offering a variety of inspections makes perfect sense, and does work. I have offered choices in inspection levels here for going on 6 months now, and business has picked up each month.
It may not be for you, or your area, but it doesn’t cost anything more to offer. Not all clients have the same needs and expecations of an inspection. Clearly, these people wanted something specific but could not find an inspector who offered anything like what they wanted.