Using the system App Switcher by holding down command and then pressing Tab successively the App Switcher will rotate to the beginning of list when Tab is pressed when on the last icon.
Please implement this for the trackpad invocation of App Swticher.
Currently when dragging left or right with two fingers at either end of the list, the selection will go no further to rotate.
P.S. the reason for this is that when there are a significant number of running apps, it's often not possible to use the trackpad to reach the end-most apps. Being able to go left and wrap-around to the end would solve this issue.