I don't know about your motives, but personally I play to enjoy myself – not for the money. ;)
Also, we definitely do not need any new runewords. We do need Enigma and Call-to-Arms removed though. This would also require no effort at all from Blizzard's part but would massively improve the gameplay experience.
Then of course there's the addition of captchas, which would also require very insignificant effort.