Come on guys, it's been 200 years, flintlocks and muskets would be pretty cool.
Then again, I'm not so sure how well it would fit into the nordic environment, maybe for TESVI: Hammerfell, Redguards are sort of pirate-y right?
For now lets just get spears and crossbows back.
That would not make sense after all the destruction of the Oblivion crysis, the fall of one of the more advanced nations (Morrowind) and the loss of many Dwemer artifacts/technology, not to mention the fact that there is political instability, civil wars, and the empire is almost disintegrating? If anything, technology and magic will have regressed in this period, trade will have decreased along with travelling and the exchange of ideas around the world. This is pretty much the Tamriel equivalent of the Dark Ages that started around/when Rome collapsed.