My only additional comment is that to my understanding, the processing fee is intended to be a cost recovery model. From our point of view, we like to see fast processing of citizenship applications. In terms of addressing the issues of access, perhaps something like a waiver on humanitarian grounds could be considered, but we would not necessarily support the reduction of the fee if that's going to negatively affect processing times.
On April 14th, 2016. See this statement in context.