I feel this is a great feature! Very useful!

While writing lengthy articles can be done at both ends, I found it very practical to correct typos or change words and phrases, some things you just see later and easy improving and finetuning is a big help.

Also having a two column setup and pictures (a successful first test made with page builder which shows you just blocks in the backend) and creating the balance between texts and pictures feeling just right is much easier from the front-end. While one can live with a lot I found eliminating the constant cylce "switch from back to front and back" a blessing!

Obviously I used WP now for 4 weeks only and am not a professional writer.

I vote for core integration!

Thanks for your efforts!