"If you want to build a ship, don't drum up the men to gather wood, divide the work, and give orders. Instead, teach them to yearn for the vast and endless sea."

It’s my observation that a softfork proposal only starts gaining momentum when there is a clear understanding of the benefits it provides and it builds a coalition that staunchly wants it to happen. Try to find passionate co-sponsors and hone the message explaining the benefits of the proposal.