Hi,
I am a fan of OmniFocus, but I do wish the hotkey to bring up the text entry screen worked globally so that it worked when I didn't have the app open. I mean, it could work similarly to Quicksilver and I'd be fine with that. That is, I guess Quicksilver is technically "open" when you can use a global hotkey, but it's not distracting. So I guess if there were a way to hide the icon in the dock?