I have recently acquired another 0-4-0 which will be converted into another NWRR. However, after the disassemble, the main frame that holds the motor is difficult to get off. Not risking breaking the new porter, I'm leaving it on, and that means that the metal supports for saddle tank with still be in place. To disguise those, I'll make those into running boards. Sure, those are prototypical to the real thing, but its a compromise that makes somewhat makes sense.
So it looks like I may be working backwards in the future. After having problems with the 90 degree cross level cross in the Living Desert, I'm considering removing it. My little porters never seem to have enough power to get across the cross with half their power contacts cut off when one set of wheels rolls onto the plastic part of the cross when running at crawling speeds. The only solution is to remove the cross, and re-grade the entire desert which includes ripping up the track right down to the masonite foundation. Then I have to create a new graded sub-roadbed so the track can pass over itself. Though, in such small space, the grades may be pretty tough for the little porter, but we will see when I give myself the green light to do. An ambitious project just got more ambitious!