Hi there,
i think this is really down to user preference as the experience is significantly different to Classic editor – it may be worth having a ‘play’ with it on a test site to see if it feels right to you.
The biggest advantage is being able to add richer media content and columns without the need for plugins/shortcodes. It is not 100% WYSIWYG but you at least get a very good representation of what the front end will look like as GP integrates theme fonts and colors into the editor.