Much like Facebook has "Saved Replies" in messenger, it would be great to have "Saved Captions" as a button when creating a post.
I frequently post a similar contest post once per week and change up the first paragraph (but the rest of the post is the same every week). If I had a "Saved Captions" feature, it would save me time and keep me on Zoho instead of switching back to Publishing Tools and tracking down last week's post to copy & paste.
Similarly, many businesses use the same few hashtags over and over. I would use a "Saved Captions" feature to quickly add these as well.