In the Composer app there is only one preview option available to editor's working on an article and that link is universally set for all users via composer settings. Organisations will generally default this to be the desktop version of the article.
In the PageBuilder app editor's working on pages have various preview options under the 'Device' view dropdown - a simplified version of this ux would be very useful in Composer.
Editor's working on an article would then be able to quickly select preview article in Mobile/Responsive/Custom from Composer and could easily compare the different views while editing.
Luke Cassidy
