Currently, the only ones I know that works is bolding and breaking space. We'd like to be able to specify larger font sizes, colors, perhaps ability to add tables.
Adding tables and inline images. If users really are supposed to use Workfront instead of email this is a must. The lack of this capability just caused my company to go with JIRA instead of Workfront for a major bug tracking deployment. It's boarderline bizzar that this does't already exist.
I really need to be able to customise the font size. At the moment I have to extract excel report and then manually manipulate it to make it presentable to the Board.
Yes, I would like to see full markdown adopted, if possible. Code snippets are a must. JIRA's support is pretty good but there are tools with better support: