1) If I search for an Elizabeth Brown x in Northumberland in 1891 to parents James & Isabella I get this:
Name: Elizabeth Brown
Christening Event Date: 1 Feb 1891
Event Place: Newcastle upon Tyne, Northumberland, England, United Kingdom
Gender: Female
Father's Name: James Brown
Mother's Name: Isabella Brown
Success! I now know that the baptism record that I'm seeking is out there somewhere in Newcastle but because the parish isn't specified I don't know which of 20 or 30 parishes to check, or indeed whether to look in Church of England records, non-conformist records, Catholic records etc.
This is the record that comes up if I replicate your search:
https://www.familysearch.org/ark:/61903/1:1:N6VZ-33JOn the right of the page, if I click on the down arrow where it says Document Info, that tells me that This info was indexed from images on film 1469113 and a digital folder 004629002
Search for that film number in the catalogue and that tells me the baptism took place at the chapelry of St Pauls, Elswick , in the parish of Newcastle St Nicholas.
https://www.familysearch.org/search/catalog/519530?availability=Family%20History%20LibraryI am not a church member, don't know much about their beliefs or how much detail is required for their ancestor research. From what little I know the eventual aim is for an index to be linked to the image the information came from, so barebones details in an index is possibly enough for those purposes.
They are still a long way from achieving this digitising and linking, and for general access to images they are often strictly limited by the record holders regarding access to a lot of images, church members or non church members, and where, at an FHC or from home. (Northumberland is very insistent about this).
Can't say if the above method will work every time, but on the whole I find it useful. It may not been seen as ideal/ convenient by a lot of people, but if it gets me the info I need I am happy.
I am very grateful to the LDS for their generosity in sharing their databases/ images where they are allowed to with non church members such as myself.
Boo