Hi bcotton,
Add a new workflow from Templates/Files and Apps/Launch file group from hotkey.
Choose your hotkey (I'm using ctrl+alt+cmd as modifiers), right-click the hotkey input box and choose the fastest Trigger Behaviour.
Then doubleclick the Launch Apps / Files -action and drag the App there (you can drag it from Alfred search window).
I think it was easier + faster to set global hotkeys to apps in Alfred 1. I't would help if you could easily duplicate workflows in the list (with cmd+d).
If someone knows a faster way to do this, I would be glad to know too.