I'm not saying this to be controversial but I find it very hard to grasp how it takes 2 + years to produce a model!
I'm guessing permission to produce the model and liveries was sorted before Dapol even announced they'd be making this model.
With 3D scanners, 3D printers etc available now a days I'd expect they'd be able to make a pretty accurate model in a couple of months, max.
I imagine it'll use an off the shelf motor and so I struggle to see why it really takes such a long time to complete. I shouldn't think the real thing took much longer to design and build from scratch.