Anyone else happy with the new Sinnoh Pokedex? A lot of heavy hitters will now apparently be easier to come across than before, although its tough to say if some of the Pokemon will remain hidden until after you beat the E4 the first time, since Pokemon appearing after beating the E4 to complete the national Pokedex has happened before.
How about the new gyms? Apparently, a fair few of them have recieved upgrades in their roster ( Volkner for one finally gets a purely electric team) and a certain hard-to-find gym leader has been moved to become the 3rd leader storywise.
Concerning the Rotom issue, from what I've heard, the secret key apparently changes Rotom depending on where you do it. With regards to typing, it might be route-wise like with Leafeon, Glaceon, Probopass and the like, or like you guys said, it could very well be just around the old chateau. It is also possible using this key is limitless in the same manner with the Glacidea flower, so its simply a mater of going to a spot and changing the form. I could be wrong however, but the ability to freely change a Pokemon's form isn't that far off, as many other species are never limited to a specific form like Castform and Shaymin, save however for Wormadam, whose stuck with a steel, grass or ground typing after evolving.