I personally don’t see the point. Needing to preview something means that there is a discrepancy between the editor and the view. I would rather just eliminate any discrepancies.
Discussion
One thing we could be doing is showing image and link previews when you paste links… nostr:npub1zafcms4xya5ap9zr7xxr0jlrtrattwlesytn2s42030lzu0dwlzqpd26k5
100% agree, but I’d also love a way to review the text to cut down on the forever typos. Primal on web and Nostur on mobile do this. Plebstr has a 5 second post timer with an undo button.
Here is a proofread feature request