Please include regular search to search in description, too.
I never use search-window, it's slower in use, and IMO description belongs to basic search-fields next to file-name.
We can't add everything to the Simple find panel, or it'd just end up the same as the Advanced one. I think using descriptions, let alone searching them, is not something most people do, so it's a hard sell.
The Advanced search should not be any slower to do the actual search, and if you set it up with the fields you use and then leave them there, it should not be slower to use it either.
As said, I dont think it will end up in other options, as description is next search to filename.
But what about a search field, that uses search options from search window? With slower I meant usability opening window, choose search option instead of "one click and then typing".