Quite frankly, this is a statement of the bleedin' obvious. It has been pointed out many times before that any heritage railway quickly becomes a pastiche of what it once was - it has to in order to survive. in the modern environment. The Tallylyn is a good example of a railway that is sort-of unchanged yet is nothing like what it was when it ended its days as a working line. The inevitabilty of change shouldn't mean that we cannot try to portray as realistic as possible a pastiche though.