Unfortunately for now you cannot customize (reorder, add or remove) the columns because the "extended" mode depends on the Hotot window width: the larger the window is, the more columns will be displayed. Hopefully such a feature will be added soon.
Install Hotot in Ubuntu using the following commands:
sudo add-apt-repository ppa:jimmyxu/hotot sudo apt-get update sudo apt-get install hotot
Thanks to Ubunlog for the news!