Possible Botting Solution

The idea just came to me while I was farming (legitimately) and thought why not make the game record your movements (a keylogger server-side) and save them. The next time you enter the same area from the same portal it maps your moves for X seconds and compares them with the previous. If they're identical then it's a bot. There's no way a human could achieve the exact moves in the same amount of time. They'd need to REALLY get out of the house if so.

I don't think I want anykind of keylogger, legit or not recording my keystrokes.

Not many people trust NCSoft at the moment look at the "Account stolen soon as i used NCSoft" threads for more info
I really don't want keyloggers on my computer at all, specially from a source i'm not sure about trusting

And do you really think it's that hard to make a bot add in some minor variations in what it does?

I'm pretty sure a.net sorta does this already. I mean, it is a known fact that a.net has some sort of logging/monitering program that's used on reported bots. I think the problem is, they can't do it on 3 million accounts (so they only track suspectious, reported accounts and then try to bust entire gold selling rings at once).