Ummmm....
If the Libreoffice team incorporated every single extension, idea, concept and the kitchen sink, it would be Microsoft Office.
As I'm rather good at the American flavour of the English language, I doubt I'd use any of them unless I decided to write a book... which at this point I've decided against as I don't have the time or any subject matter I'm knowledgeable enough to write about that more than 3 other people actually give a whit about.
However, I'm glad to know about the existence of these plugins so I can suggest them to friends who are more "grammar-challenged..."