I don't like that the new format double spaces when I hit return. I also always follow this link
https://trello.com/u/djustint/labs
to disable it so I can avoid the double space and also when I copy past the text in the new WYSIWYG editing into a basic editor without formatting it does not keep the lines or returns separate and blends all the lines into one. This is why I have to turn it off so when I copy past it the old way, the returns are there and the lines are not blended together. I would love to be able to achieve this in the new editor, but I can't find a way. Any suggestions?