P: Sort by more fields, sort by multiple fields

I'm really frustrated by the low range of options available for reorder photos in catalog and collections. Please add the possibility to reorder by Title and/or by Copy Name in order to create automatic custom orders without renaming the file or dragging up and down photos. 

This ould make my wedding workflow SO much faster: I add keywords like "1-Prep, 2-Ceremony" etc... then view them in the order I want the categories to be in, then rename.  With multiple cameras and shooters, we shoot details throughout the day, but I don't want my clients and guests to be viewing portraits of the couple, then random table details.  I need them all in categories to present.  YES, I can make label texts, but it would be so much faster with a keyword I can add, then rename and number, then remove if need be.  

A quick Google shows that this has been a request on many forums since at least 2010. I'm not asking for new code - the sort algorithms are already there, just add an extra option to the menu.
In my case, I have a collection of images and I need to print a contact sheet in alphabetical order by title. Obviously, I have the title in the title field, so need to be able to sort on that. At present, I have to do this manually. I shouldn't have to pay a third-party for a plugin to add what should be standard functionality.

Hi Sarah, can you perhaps explain to the engineers how that would benefit your workflow? As you can imagine, there's a lot of prioritization that goes on, and really compelling workflow reasons do help give a request extra weight. You might also like to try to plug-ins mentioned above, as they can already sort by title for you.

It seems to have been wanted for a long time. When will we be able to do a simple sort by title???

I totally agree with this.
When I create HDRs out of pictures in a collection they are now added at the bottom of the collection instead of being sorted in within the other pictures. (The created date is even written in the new created file)

No big deal to implement.

Just adding to the chorus here: sorting by File Size. 
I switched over from Aperture, and was really disappointed to discover I can no longer do this basic search. 

If the data is available, it should be usable as a search/sort/smart criteria.

Lightroom is ultimately a database of photos with the ability to edit...so making that fully functional in the database side is crucial. 

Check out the List View and Data Explorer plugins -- they're a little less convenient but can get the job done.