Hm, I never have to write ALL CAPS for long, and actually, holding shift with my pinky does that without wasting time when forgetting CAPS LOCK is triggered, writing stuff then having to change it.
A single key is a really neat idea IMO (though they should allow users more options). I can hold CAPS LOCK with my pinky and hammer away really fast - no need to hit enter just lift the pinky!!! The problem is not the trigger key - the problem is that the launcher heuristics just plain suck. It has failed to index many of my programs so is useless - and has bugs just about everywhere on my machine. I would actually like an option for FARR (and quicksilver) that could trigger using this method. Mouser?
BUT lets not get distracted by trigger keys - what enso (in theory) and quicksilver offer that is really wonderful is a unified interface to do stuff using a subject -> verb -> object concept - it is what we have struggled with in discussions here about doing stuff with the subject in FARR. I find a file, and want to mail it to someone. Or move it somewhere. Or open it in something other than the dafault app, or append some text to it, or copy its content to the clipboard, or...
What I really want for FARR 3 (apart from faster searching), is this. It is the philosophy that a lancher can step beyond the subject. Currently in FARR we have to pull the mouse over and right-click to open an OS context menu which only has limited options.