MAIN TARGET OF THIS PROJECT – USER MUST EDIT CONTENT:
- and not investigate many buttons around content
- and not investigate settings popup (panel, page etc)
- and not read documentation (documentation for trivial UI elements is unacceptable too)
- and not make experiments with your theme – change settings here and there then see result
It can be perfectly solved only by front-end HTML editor. Browser already have everything to WYSIWYG editing DOM (Document Object Model) – just need to add few limitations into it for complex designs – and it will work like Microsoft Word.