nullbarriere
Just the preferences let a little wish open: couldn't there be an obvious option "let it be as is". I have a site which in 30% of the articles uses abbr. like USP for title, but the rest doesn't. When I choose "all uppercase" the majority of titles looks ugly, when i choose "first letter uppercase" the abbr. titles look - just wrong.
So please give us an "let it be" option, as Mother Mary already advised.
Sorry for this late reply.
I agree that a 'let it be as is' option would be much preferred. Actually, i would have let the 'upper/lowercase' option completely out of the plugin, if only Joomla would leave the Article Alias alone...
Joomla automatically changes the Article Alias into a lowercase representation (and replacing spaces by dashes), which makes it difficult to have a nice and beautiful title alltogether.
The uppercase/lowercase options are the best i could think of to have at least a little control over the appearance...
Any suggestions to further improve the plugin are always welcome... I will try to find a way to prevent Joomla from lowercasing the Article Alias in the first place, but i'm afraid that will not be possible without a core-hack....

