Klaus, I can be a little dense at times, so please explain how the single passenger license would be different then a Sport Pilot License. What many do not seem to remember is as a Sport Pilot, you are not limited to LSA qualifying aircraft UNLESS you intend to fly based on a valid drivers license only and not get an FAA Medical, at least once, and yet, at least in my experience, the reduced training requirements (as well as added limitations) never resulted in a massive increase in the ranks of new pilot training starts. For LSA or otherwise. The majority of LSA Pilots I know, at least have a Private and are flying LSA to eliminate the need for an FAA 3rd Class or better medical. Now at least many of us are flying under BasicMed and for the insurance companies, your BasicMed dates are listed on your FAA data file. Though I can't get paid to fly at this point, I can get paid to teach, so I am still instructing.
Although I had a few start as Sport Pilot students, as soon as they found out that, first they might not get through in the minimum time (typical for once a week students, second that there was not that much more to do to get the private, especially since they needed more time than the minimum and lastly, why have to pay for a SP Check Ride and then a PP check ride. For a combination Private / Instrument, I would also think that you would then be forced to either take two check rides as there are things done VFR on the Private ride than would be done on the instrument, or a more extensive double check ride, which I bet would be more expensive. Then you also have to use an IFR certified and current aircraft, which in many cases is more costly then say if you took your private in a C-150.
I have a friend who is a new student. I got him signed up for his Student License through the FAA / TSA process and he is now going to a Faux Medical Examiner, where he will filled out an example medical form and take the make believe medical. If this doctor says he will pass the 3rd class, he will take it, hopefully get it and the next time around go Basic Med. He is training in a C-150. If for some reason the doctor says don't chance it, he will switch to LSA, but he really wants a PPL.
In many ways we have moved forward. When I got my license you needed 160 hours to go for your commercial, after which you could fly for hire during day time VFR. To get your Instrument, you had to have 250 hours first. That got dropped to 125 and then just back to the current level of time and training required. Do you support a Private / Instrument where the whole multi-passenger allowance would be on hold if you not only had your 90 day take offs and landings, but also if you did not have your IFR currency? I know a lot of instrument pilots that fly for fun and do not keep up their required instrument currency no less proficiency a very big difference in my opinion.
Some day we will have to chat about my negotiations with the FAA over the years. They can be flexible at times.
SUPPORTING MEMBERBobWest Nyack Aviation, L.L.C. New York, New York - East Hampton, New York & Warwick, New York email@example.com