When last at Biddeford Station in 2007, the 2' crossing was still in place.
I, too, have dreamed of the WW&F in Wiscasset and have walked the ROW in town.
Staying to the inland side of the ME tracks to Route #1 is definitely doable. Getting to that point may be problematic, to say the least.
A simple joint platform could be erected.
Dream on......