I am loving where this thread is going!
Adding temporary stops is definitely feasible, I also am somewhat interested in Derek's idea for photo op locations. Allowing people to travel the right of way by foot between locations poses a great potential for danger, but dropping off people at a fixed location shouldn't really be an issue so long as no person is ever alone out there. Perhaps the temporary stops idea can be blended with this. (Off topic, but that whistle post in the 6mph section near the end of the line is for the curve, not the ATV trail)
As far as Talbot park is concerned, people are allowed to disembark trains/cars there to transfer between cars or to enjoy the location so long as they are accompanied by 1 or more crew members with working communication devices (radios, cell phones...). To set up a transfer point there is definitely possible and most certainly worth discussing! Also, subway cars don't have
to turn in the Biddeford lead, they can enter the loop track and change ends either at the platform or on the other side. Construction of a temporary high out there is kind of a stretch but not impossible, this should be considered before being tossed. Streetcars could be sent ahead of subway cars so by the time the subway cars got there the streetcars would have already looped. Either that or the streetcars can change ends at Talbot Park like the subway cars so long as only double ended cars are sent in that group.
I'm not sure what we have in terms of bus shelters and/or signage, but that is definitely something to look into, and if we don't have any shelters (which I don't think we do), we should! Especially with the plans of incorporating buses into the regular operation, a bus stop shelter would certainly be appropriate.
Route maps are a great idea. When the day's events materialize a little more this should be relatively easy to put together.
So far all of these ideas are great! Keep them coming! Regardless of how feasible or realistic your concept may or may not seem, posting it could give someone else another idea. There's no harm in brainstorming, plus anything that can't be done this year could be a goal for future events as well. Don't hold back!