Left trackpad opens a radial menu for various trays and inspirations, toggleable through key presses (refer to config). The options are labelled with different colors to aid memorisation and quick visual distinction, although with enough practise you could trigger the key of your choice with a quick touch of the trackpad in mere fractions of a second, so you'll trigger them as quickly as on they keyboard, if not quicker.
The right trackpad is for mouse and zoom, toggleable by pressing the pad. I added a shortcut for keyboard access, so although a bit clunky and requiring practise, you can pretty much trigger anything that you have assigned a key for.
You can use this config by starting Tequila through Steam, if you rename it to "City of Heroes: Homecoming" first. Have fun!
Use this link to access the config:
steam://controllerconfig/city%20of%20heroes%20homecoming/1919468697