Not sure where to start here.
I believe anything Lionel makes in S has to operate on a Gilbert track system to achieve realistic sales. So far everything they have made does. This eliminates a lot of modern, long rolling stock because with properly placed truck mounts the car sides will hit the Gilbert turnouts.
I feel engines and rolling stock need to be two different surveys.
Lionel needs to support the survey contents to the extent the items listed could be manufactured at a credible cost.
Engines, we should get as many votes as engines we would buy. For example if there were four Legacy engines on the list and I would buy one each of three of them and three of the 4th one then I should be able to use 7 votes so Lionel gets a true picture of likely sales. I also think Lionel has further fragmented a small S gauge market by selling both Legacy and FlyerChief.
Availability of scale wheelsets should be noted if planned. Unlikely for steam engines.
I would participate in the survey but Lionel needs to agree to at least look at the results as input to their product planning.