I think there are plenty of good points to the parliamentary system but I also feel like you should have to win more than 34% of the vote to get a supermajority
Yeah. That's not parliamentary per se, it's first past the post which is the same thing we have. But it gets worse on the disproportionality when you have four parties breaking double digits and first place is in the mid-30s.
Unfortunately FPTP is like The One Ring of UK politics: whoever wins does a Boromir/Isildur and thinks "Maybe we shouldn't destroy it, maybe we should use its terrible power for good?"
In fairness, the all-party committee made a complete hash of things, recommending a change in electoral system...and completely ducking the question of what thar system should look like. Which left the Liberals with two bad choices: impose a system, or just do nothing. And they chose nothing.
It didn't help that the Liberals were set on IRV. The NDP wanted a proportional system: IRV would have wiped them out.
Had the Liberals on the committee proposed any flavour of proportional representation, they would almost certainly have had the NDP backing them up.
Straight prop-rep was a non-starter for Quebec, though, because the Bloc would have been permanently crippled. Some sort of mixed-member system was probably the only potentially viable route, but exactly how or what was something no one agreed upon.
But I think that would be something the Libs, NDP, Bloc, and Greens could have negotiated... if the Liberals were willing to come to the table on a proportional system.
Instead, the commission had to go to the Cons, who have no interest in anything except FPTP, except to put egg on Trudeau's face.