The mere idea of a TES game without mods
*shudder*
They didn't want to release one for oblivion when it was released(or was it before it was released? can't remember which). When Oblivion came out and Todd was asked in an interview if a modding engine would be released, he said something to the effect, that creating a modding engine is extremely expensive and that they had no current plans to release one. That raised a bit of a storm with fans and the constant complaints/threats of fans not buying the game that made them relent and release a modding kit. I think they learned their lesson.
With that said, I am bummed that the game is still just a modified gamebyro renamed. They just renamed it because so many people online were complaining that they are tired of gamebyro because its so dated and old looking by today's standard (which is true, I love fallout but daaaannngg, it ugly to look at). Now, I could smell the PR machine BS a mile away when they suddenly said its a brand new engine. A lot of praise has gone into the trailer, but oblivion's trailer was just as pretty too. One thing I noticed is the ugly people are still in the game, look at areas where you can see people at the background, pause the video and you can see they are still fugly. The only person that looks ok is the guy at the end that the main character is fighting, I guess he is a important NPC. I know their are screenshots of some nice looking NPC's, but which am I going to believe, some still PR shots or their own video?