There has been a growing divide in the TES fanbase over the previous 3 games (give or take 1) between those who want a more "generic medieval" fantasy game along the lines of Europe, versus those who want a more unique and strange world where things aren't necessarily similar to what you can find on Earth. There is also a division between those who want a more action-oriented game and those who want a more deliberately paced game with more emphasis on culture, personalities, interactions, and a coherent history.
The question is: Does it make sense to branch TES out into TWO game series, a more traditional medieval fantasy that relies mainly on a mix of "standard" fantasy elements and real wildlife, and a more imaginative and fanciful world where almost anything goes, as long as it's consistent with the setting?