I tend to agree with Joe on character articles. To me, when you're writing about a universe with a timeline stretched over millenia, writing about people in present tense doesn't make too much sense, especially when they've died onscreen, like the Lord Ruler did.
I tend to have more trouble with cultural things such a spheres. To say that spheres "were a currency used on Roshar," seems kind of odd, but I'm not overly concerned, especially considering what's been said about other fan wikis.