That is an excellent idea!
Sure your likely looking at these, as I did when I started these, as a learning experience that all can benefit from from beginners to those with a little more exposure. For these members should jump out there and add a clue and even if it's based on a misunderstanding - others will learn. The one post and detail only would help hold back some of us from spoiling the surprise too soon and the poster can do a final reveal once a time limit is reached. Sort of an layers of an onion sort of thing.
Have two challenging cars I've been waiting to offer up and have been looking for a time and place.
Don't think these exercises are off from the forums core focus so going to move this one over to the General area where I posted the earlier ones