All of these are related.
The basic intent is that the decision statement must include an evidence-based justification for any trade-offs that were made between or among the the public interest considerations in proposed section 63. It requires that there can't be transparency and accountability without expressly requiring a reasonably detailed explanation of how and why the trade-offs were made. Also, the reasons for the decision must provide a cogent, evidence-based account of why, for example, a project was approved despite the likelihood of adverse environmental effects or impacts on indigenous rights and interests. As well, it allows for amendments to the decision statement in response to unforeseen changes.
One thing I would add is that is in proposed paragraph (a.1) it would say that “the Minister disagrees with” any of “the conclusions”, and the same under proposed paragraph 65(1)(e), which is after line 11 on page 41, “terms and conditions of” any “approval”.