I would say the federal gov is taking a very good step in the right direction in regards to ending home deliveries (for letter mail). Letter mail is literally a dying business, and will continue to trail off while costing millions and billions as users of letter mail -- ie. basically only seniors at this point -- grow old and pass on. The 5 days a week mail delivery model, esp when that mail is mostly delivered to individual homes, is entirely unsustainable. It is extremely expensive both in terms of labour cost as well as financial costs, and accounts for a significant chunk of CP's expenses. So the delivery model just needs to change and adapt to the realities of modern life.
IMO letter mail delivery should really be reduced to 2 or 3 days a week. The natural consequence of that is -- signfiicantly fewer staff will be required for letter mail delivery, and that's where the bulk of the cost savings will come from. Naturally, the union will be against it and try to fight it tooth and nail. But the reality of the mail business is -- people no longer use letter mail, and its usage will continue to dwindle. Parcel delivery is where the business opportunities are at.
If anyone is interested in the subject, the following is a really good podcast episode to discuss it.