The same old and same old story repeating again. “Some are better, some are worse, but in the end, they are all the same.” In the Federalist Party it is done differently. All Party members in good standing can run for the nomination if they can be a candidate for the House of Commons. However there is section 4.7 of the constitution that states.
4.7 The Congress in regular session by an absolute three-quarters majority vote can bar a party member from being a candidate for the Federalist nomination for the House of Commons. The Congress by an absolute two-thirds majority vote can rescind the Candidacy of a member after they have won the nomination election. This is to be done within 90 days of the nomination.
There are no protected nominations, they are all open, and you want it, then earn it. There is no secretive committee deciding behind closed doors whether you can run or not.
11.3 The Leader shall sign all nomination and Election Canada papers. Any refusal shall mean the automatic and immediate expulsion from the Party.
Clearly removes the potential for abuse by a Party leader.