I'll be going back and editing the Skaven sheet this weekend if that helps.  I basically just got a canon sheet ready so I can know, and have ready, what I'll be doing an alternate take of.  I'm not sure what changes I'll be making just yet, thus how alternative it will really be, but certainly new characters.  Going to try to make them more eldritch, more Lovecrafty if nothing else.  I think I'll also have a Skaven military leader with a new clan, something like a Skaven version of Caesar with Skaven Roman Legionnaires under him.

Hell if you look at my sheet I don't even have images/descriptions of 90% of my units.

I've got to say though aren't alternate takes generally more interesting when a decent proportion of stuff is the same or very similar?  What If scenarios in a familiar world are only really What If scenarios in a familiar world if that familiar world is still familiar.