The biggest lore problem I see is..

THE LUSTY ARGONIAN MAID BEING IN THE SECOND ERA

[censored]. I never thought of that.

No problem here: Author was born during late 3rd Era.

http://www.imperial-library.info/content/crassius-curio-hlaalu

That's actually a matter of some dispute.

You mean the 300 years that some claim to be invented by some emperor who wanted to have the first millenium end in his lifetime?

You know that you can do a radio carbon dating of stuff made before these "invented" 300 years and you will find that the 300 years really have passed. So either these findings were not from that time period but about 300 years earlier, the emperor did indeed find a way to influence space time or the 300 years were not invented after all. Either way, the evidence currently doesn't really support the theory that these 300 years never happened. This dispute is more a wild theory atm without enough substancial proof yet.

The problem this theory always had is simple. Events that occured concurrent NOT in Europe but in the Middle East and Asia can be traced through these 300 years. So it is far more likely that this theory is a hoax and there are really almost no documents and facts from that era in Europe.

No, Phantom Time is obvious Oscar Meyer. I mean simply that the 'Dark' appellation was Renaissance-era haughtiness.

Oh well, at least in Europe the time from around 700 to around 1000 there are almost no documents preserved which led to these times being called the "Dark Ages" because they are dark in the sense of not knowing much about it beyond hearsay. It wasn't called dark because it was evil or backwards or anything beyond unknown. It's just the same reason for example why today we have dark energy and dark matter - we do not know anything about that, but it was clearly there.

To coin that term negative or derogatory wasn't done by historians.

Don't put too much faith into radio carbon dating. It can't date findings that young properly. Heck, it often can't even date findings from the neolithic more precise then into a window of some hundred years. For medieval datings dendrochronology (wood ring dating) usually is the preferred method. Your point stands, though. Those 300 years can't be invented if there were trees growing during that time.

That theory is just as nonsense as the one that the entire Roman period was invented by Renaissance scolars trying to pass their heretical ideas as old news.

My problem with this type of thinking is that it completely shackles the developers down the road. "Okay guys, you have one shot to write up all the history for Tamriel. All of it. Everything. Don't leave anything out or think of something cool later, because we absolutely can't put it in.

With a series that's constantly evolving like TES, you have to suspend your disbelief a bit, or else it's going to get stale really fast.

Wait, what? That's a theory out there... I've heard some crazy stuff but that is simply awesome.