That the Mandalorians started out as a species. Unlike the Sith (where “Lords of” was interpreted as “rulers of a species”), there was nothing suggesting that the Mandalorians were ever a species.
The inconsistencies surrounding how long lightsabers have been around and what they were like in different eras. I prefer the idea that lightsabers haven’t changed since the Jedi began “over a thousand generations” ago.
Darths pre-Bane and post-ROTJ.
If they didn’t want KOTOR to resemble TOTJ, why did they have it take place so close to TOTJ? Wouldn’t it have made more sense to set it during the New Sith Wars?
Why did KOTOR create a generic precursor race when the Sith species already existed?