Changes are necessary to keep this platform alive. It is pleasant to know that the much awaited HF20 is on the way. However, many issues needs to be addressed which this HF had not taken care of. (according to this post) This HF has not touched the issues related to self voting, downvoting, circle jerking, vote selling etc.
Recently, some new accounts were created by mischievous people which downvoted sincere users without mentioning anything. HF20 has not touched this issue. Many things needs to be changed. I am not sure how much effective HF20 will be and how much will it help this platform, if it had not addressed these issues.