I'd say “support with reservations” would be the most accurate description of my position. I support the idea. The existing provisions in sections 34 through 37 are widely recognized to be confusing and difficult to explain to juries. They don't cover the territory in a very neat way, and this has been pointed out over the years.
Justice Moldaver, when he was a trial judge, tried to sort some of this out in the McIntosh case in the early 1990s. The Supreme Court disagreed with him and said that the provisions were a bit messy, but Parliament had made them that way and he should just leave them as they were.
The problems with the existing provisions have been recognized for a long time. The aspect I support is bringing one concept of self-defence into one section that is potentially applicable to all offences. What I'm uncomfortable with is the structure of the proposed section.