Sorry to hear about your poor Aeroplan experiences ian. I'm not sure you are familiar but some of the tricks are to avoid flying on AC metal to limit the fees and look for other Star Alliance carriers for biz class availaility. However, I agree, to get easier access, you generally need to book a year in advance. I also prefer flying on many other airlines like ANA, EVA, Singapore, etc than AC on routes to asia for a better overall experience for example. In the past before I learned where and how to get the best redemption value from my Aeroplan points, I booked YVR to Florida in biz class for the odd cruise and it was pretty horrible looking back: no lounge access when flying on a partner, poor redemption value, booking engine not showing seat availability, etc.
The Aeroplan flights I'm now looking to redeem are similar to what I booked just prior to covid. We booked 2 seats in biz class (with the exception of SFO-LAX) from YVR-SFO-LAX-NRT/HND-GMP/ICN-TPE-BKK-SIN-IST-CDG-BRU-LHR-YYZ-YVR on AC, United, ANA x2, Asiana, EVA, Singapore x2, Turkish, Brussels x2, and ACx2. Many of these were intentional layovers of 23hrs but we were able to easily enjoy them because we were familiar with the cities. Trying and comparing all these different airlines' biz class products and their lounges was also part of the fun. It took a lot of effort to spec out this itinerary but that's my jam.
The mini-RTW trip cost us something like 325000 aeroplan points and about $1000 in fees. At minimum, I feel we got 2.5 cents points redemption value from them depending on how much you value the flights, which I think is reasonable particularly when you can get the points on the strength of welcome bonuses at under 1 cent per point. At best, based on me costing out close to the exact same itinerary via a booking engine, it's over 7 cents.
Unfortunately, with the program changes in recent years, a somewhat similiar itinerary is going to cost closer to 400000 points but likely less fees. We've already worked our way back up to over 500000 in combined Aeroplan and MR points in large part from more welcome bonuses. And we are starting to looking at booking another one of these mini-RTW trips but are holding off to ensure places are fully open and normalized, especially asia and particularly Japan.