Mismatched edge-to-metal-strip issues are probably due to my not installing and uninstalling texture packs carefully. I assume that they're meant to match
Don't count on it LOL! The same sort of light-green doorstrip (neither metal nor wood) is present in the Hlaalu doors in the MW Visual Pack. It's explicitly a Hlaalu "doorplank". So unless the doors in that pack were sourced from more than one modder, someone chose it deliberately... You just have to decide what looks right. The other issue is that the Velothi doorstrip (the recessed edge bit that looks green in your screenshot) is also referenced in the meshes of the Vivec jail doors and sewer grates (used for the metal bars) as well as the door-handles, so a wood texture was clearly not what was intended by Bethesda. It seems obvious that it should be metal, and that it ought to match whatever metal texture is used for the main door banding. Changing that means far more work updating unrelated meshes to use a separate texture for those metal bars, and there may be more we are still unaware of.
If nobody's fixed the actual UVs of the model, though, that might be worth doing.
It depends what gets fixed though. I'd suggest it would be better to fix the textures to match the mesh rather than changing the mesh to fit a preferred texture, since that breaks all other retextures that are designed around the original mesh. Unless it is a radically different mesh, of course, for use with a substantially redesigned texture.