Just in advanced, I want to ask for more full featured WYSIWYG editor, if possible.
I disagree about this. Obsidian should only support the things that are supported by Markdown because of the simplicity. There are other tools for WYSIWYG experience like Google Docs and Joplin for instance. This topic is about live markdown edit (like in Typora) so full scale WYSIWYG is kinda out of scope here. There are already some discussions about this: WYSIWYG editor - difficult to develop? - #6 by danbburg