That is not possible. You should be able to find your desktop bookmarks quickly by typing a few letters of the bookmark or site name. As Firefox has more browsing history to work with Firefox should be able to find the sites you go to most often faster.

I go to websites I visited only about 15% of the time.

More often than not I want to go to a site in my bookmarks, among all of the folders that I have spent years cataloging and creating for that purpose.

Also, more often than not, I have cataloged those bookmarks by general, hierarchical folders so I don't HAVE to remember what the URL or the name of the site was called.

Example - I do a great deal of Android data / ROMS / research with numerous forums - about 15 of them in a folder. On the desktop version I have my bookmarks toolbar at the top. I go to Computers / Android / Forums and pick where I want to go. That's GREAT UI design!

Trying to do that from the Android awesome bar has taken me...way more time than a good UI should. Makes it NOT so awesome...Cumbersome, actually...

Is there an API I can tweak or a hack for the about:config that would make any of this easier?

Thanks in advance!

There are no about:config tweaks for what you are having an issue with.

Might be possible to do something with an extension. https://developer.mozilla.org/en-US/docs/Extensions/Mobile