I absolutely agree.
It doesn't have to be anything too big, just a small things. Maybe a rediscovery of an lost technology of the dwemer is a good example.It's all about imagination actually.And it won't be an easy job.
I wouldn't mind seeing skyships in Hammerfell and perhaps fallen Automatons. If muskets are in any way brought in though they ought to be expensive to purchase, expensive to repair, inaccurate, and ineffective against anything but flesh and the lightest of armors.
Perhaps a quest (again I think they'd fit in best in Hammerfell) circling around finding and restoring this lost Dwemer artifact. When it was restored you could then either keep it and search around for pieces to keep it functioning, or sell it for a handsome price to some collector.
I'm really not that sure about the musket though, would probably be better if it were included to either keep it non function or to simply make it's function unknown to the world of Tamriel. Noone has gunpowder, the art is lost with the Dwemer, that kind of thing.
Technology could dilute the Elder Scrolls universe quite quickly if not addressed with care and consideration.
P.S.
My point wasn't their intentions, although that was a well put together and very interesting post, it was simply that their efforts and the end result would be quite clear to the people of Tamriel and serve as a warning to not venture down the same roads.