"There is no shortage of ideas out there to replace the 2-per-cent target."Indeed, there is not. One of them, dating from February 1991, when the Bank of Canada introduced inflation targeting, is to keep the target rate going down from 2.0% until something like price stability is achieved. It's all described in my 2017 CEA paper:
http://economics.ca/2017/papers/BA0017-1.pdf
Seems strange that this idea would be ignored while so many inferior ideas would be mentioned. Wake up and smell the coffee, Dave!