I was wondering, should there be an elder scrolls encylopedia, and if yes, what should it have in it?

We have TES wiki, UESP, and the Imperial Library, but they're all online. If you're referring to an actual book, it'd be cool but probably won't sell well considering encyclopedias are expensive and all that info can be found online for free.

^^ This

UESP is very helpful.

ok, other than that, does anyone want to know what happened that caused the dwemer to suddenly vanish across tamriel like in dlc or something?