What about implementing wallet encryption like in most of other clients?

Seriously, I don't feel really safe running a node that will broadcast to the web, but having my wallet in plain text. Anyone who manages to get into the system (due to some exploit on wallet, OS, daemons/services) will be able to simply copy my wallet file and get my money.
Of course, for the time being it's not that much (less than 2000$ per node at current rate), but still, better do something about it before it's too late.

I believe wallet encryption is absolutely must have feature!