There are many people making a shout out to steemit inc to do something, including me, on the same matter. Im sure at this stage they must be considering the option. There is also misterdelegation sitting with a heap of SP not yet delegated.
How we address and what we define as abuse is a dufficult, and with more and more apps on the blockchain, whos responsibilty will this be. Community features should help with that on steemit.com but im not sure about the impact communities will have on apps
Communities will only hide the abuse further upstream, but they will still be affected by it.