Nick, you did a fantastic job. Too bad your efforts aren't understood, and were summarily dismissed by Mr. Poppet.
The Lionel misses on several more details, including the missing boiler jacket clamps (EDIT: Whoops. I see you got those. Sorry), wrong headlight, missing whistle shield, missing steam dome flange (making the K-Line dome cover look like it's suposed to--as a separate piece that can be removed from a real Hudson--not just a blob of metal like the Lionel); missing hand holds on the sand dome lids; missing boiler washout plugs, missing steam chest rivet deails, and several others I can't remember now.
I have no doubt Mr. Poppet knows a lot about Lionel Hudsons, and he certainly never tires of reminding us just how large his collection is. But it's pretty clear he doesn't understand (or care about) actual steam locomotive details that a lot of us do enjoy. We end up talking at cross-purposes: He knows about Lionel Hudsons, but when you start talking specific details, he really can't address those.
(The fact that he thinks Lakawanna Hudsons are identical to the NYC J3A shows just how imprecise his eye for detail is).
It's clear the Lionel Vision Line Hudson is the most feature-packed Hudson Lionel has ever made, and I'm truly happy that people are enjoying it. If you're looking for a model that has the most prototypical detail, however, it's just not the one.