Something is being done, this specific change is just something we CAN do as of right now. Unfortunately, finding a Spam Slater / fighting tool isn't as easy as you think it is. All I have heard is, there is one in development that will do exactly what we want and need it to do, without any false positives due to it being too aggressive.
When will it be finished? That's something you'll need to direct to Chipperoo if he has any details he can share.