I've not done many missions, but I'd like some explorer variety of them. But what I've gathered about the mission part of 2.1, the idea is to make them more significant and more sequential. Don't know about variety though. Since we already have missions, it's not so much more features, but a revamp of existing ones. It's a often requested update. Which doesn't mean the update will do what it's intended to do though.And I fear 2.1, 2.2 etc risk being more features which will look good on paper, but risk not really adding significant depth/interest/variety (or emergent gameplay) to the backbone of the game...
I believe the best attitude is to chill out about the whole thing until we see some actual changelogs.