Same. I mapped mine to ESC when the MBP w/ Touch Bar lost the dedicated key. I double-tap ⌘ to launch Alfred.
Some of my weird and random HYPER keys:
HYPER-1 = Shows a custom floating window with many of my keyboard shortcuts
HYPER-9 = Takes a phone number from the clipboard as pastes it is the format xxx-xxx-xxxx
HYPER-0 = Launches KM Conflict Palette with various clipboard related functions (show clipboard, set clipboard manually, launch KM Clipboard History Switcher)
HYPER-A = Launches a dynamic list of project tags I use across various apps in Alfred that I can copy, paste directly into current app, or paste with a preceding hashtag
HYPER-C = Screen Capture
HYPER-Z = Show PopClip