I'm a user of a site where I have ended up with a lot of accounts. I use the container extension to make it so I can have each account logged in simultaneously. However, since I added the accounts in a random order, the list is in nothing approaching alphabetical order. There are so many now it makes it hard to find them; plus I have containers I use for other sites. The only way I can find to reorder them is to remove and remake the containers in alphabetical order. I think it would be useful to make it so in the settings page there was the ability to grab a handle on the left-hand side of the container listing and drag it to be where you want it in the list.