Thank you for clarifying Karnak...I do sincerely appreciate it.

Let me expound a bit. I do not think it would be easier to reach HTC's 3D accuracy goal by altering an existing model into an entirely new model, with specific polygon count limits, break points and all, rather than building each model from scratch.
Agreed. It would be difficult...and to the degree of taking something such as the Ju-88 and turning into an He-111 or B-25 it would be easier to just start from scratch, whereas the transition from a P47N to P47M is just a few tweaks and some programming corrections.
However, let's take the example of the H8K2 and looking at the base design (try to visualize a 3d wireframe model)...aside from some of the really intricate details, a transition from the B24 framework shouldn't be impossible. Take a look the specs between the 2 airframes.
H8K2:
Length: 28.15 m (92 ft 4 in)
Wingspan: 38.00 m (124 ft 8 in)
Height: 9.15 m (30 ft)
Wing area: 160 m² (1,721 ft²)
Powerplant: 4× Mitsubishi Kasei 22 radial engines, 1,380 kW (1,850 hp) each
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B-24
Length: 67 ft 8 in (20.6 m)
Wingspan: 110 ft 0 in (33.5 m)
Height: 18 ft 0 in (5.5 m)
Powerplant: 4× Pratt & Whitney R-1830 turbosupercharged radial engines, 1,200 hp (900 kW) each

IMO this would be more difficult to do from scratch:
