Being able to slide tasks up and down on the fly is a critical feature which needs to be brought over from Wunderlist. I plan and order my work day tasks with it and need to be able to adjust the order quickly and frequently. My wife and I also were using Wunderlist as a grocery list sharing tool. Same complaint as we like to order the list to match our path through the grocery store. I see a few people miss this option in the reviews - Without it, the app doesn't work for me.