This would be really helpful for us. Many of our posts are more than two lines, forcing users to leave slack if they want to read the full details. It would be easier for team members to decide whether to upvote a post if they could read the full details in slack as it appears.

Having the option to display X lines would be great - for example in our Canny posts we have a template that starts with "Background." If we could ensure this gets shown to avoid extra clicks into Canny that would be very helpful.