The Dragons in NWN1 have always been some of my absolute favorite designs. The classic Red, Blue, Green, & White Dragons dominate what is seen most often, & the more exotic colored Dragons like the Black, Gold, & so on, were always so deadly & fun to play with, especially with many of them having signature & unique Dragon Breaths! If it's even possible, I think it would be incredibly kool to see a rendering of the NWN Dragons into Skyrim, & perhaps even use their sound effects! Of course, the scale of NWN was not completely accurate, so making them even more giant from what the vanilla game suggests would be a given. However it was a very simple task to increase the size of Dragons (or any NPC) in the NWN toolset, up to 200x's even. That is a scary thing to do! x) Personally, I would prefer the NWN Dragon over the Skyrim Dragon, & to me the dealbreaker is because the Forgotten Realms Dragons have arms! The Skyrim Dragons are restricted to their hind legs & their wings, but the FR Dragons have their front arms & talons. Extra deadly.
