You know for a long time I wished that we would have got to see the Battle of Wolf 359. It was supposed to be this huge horrific battle where the Federation was nearly brought to its knees against an enemy they could narrowly contain. The more I think about it though the more I'm glad that we've only seen snips of it and not the actual combat. What we have in Emissary is more than enough because anything else would lessen what I imagine it to have been like.