joaonl less experienced users they might find it difficult to work in a text post which is filled out : : : : : or [IMG] [ B] [ I]
That's what markup is meant to solve. If you read e.g.:
This is **not** what I said,
do you think it is difficult to comprehend or looks messy?
And if I insert an image:
Look, how cute: ![joaonl](https:/discuss.flarum.org/assets/avatars/4O2Qc3kK5kxdZblX.png)
... and it doesn't show in the preview, I can easily spot the problem and correct it with a single stroke.
Do agree, an option to enable and disabled rendered output is a good way to balance the needs of the writer
Yes, such an editor extension should preferably allow switching between markup and WYSIWYG, although we would end up with two previews, one in the discussion itself and one in the editor, not very intuitive either.