I guess the game would look more like the original on the 5200, but I would still like to see a 2600 version. One because I cant find a pair of decent 5200 controllers, and two, the 2600 is my favorite . I dont think the game is too complicated for the 2600, and I think most people would agree, that you wont find better controllers than those of the Atari 2600.
Perhaps if Mr. Slocum's HSR RPG is successful, which I'm sure it will be, he would consider "TROGDOR!" for a later project (hint hint...if you are reading this Mr. Slocum )