Welcome Dan Williams, new LibreOffice Developer focusing on UI/UX - The Document Foundation Blog
(blog.documentfoundation.org)
I never tried looking into UI options, I use just OnlyOffice nowadays but LibreOffice should consider turning that on by default if it's an option.
OnlyOffice also has a 10/10 screen when you open it, instantly asking whether you want to open a text document, PDF, make a slideshow etc. It's just very polished and they actually put effort into the UI.