Great trip report! Happy to see that you enjoyed WEM. I'm from the Edmonton area, and it's always cool to see trip reports from the mall. I have a few facts/trivia that relate to some of your pictures/comments.
Quirks in the Works is definitely the most unique dark ride I've been on. There was some talk going on several years back that the park was looking at doing a complete reno on the ride. Same theme, but totally re-done. New ride vehicles, new props, animations, video, lighting, everything. I don't know how true these reports were but haven't heard much since. I think it would benefit very well from a reno, it's a fun attraction.
For World Waterpark, I don't know if when you were there, the Zip Lines were in use. Prior to them being installed, the water park featured the worlds tallest indoor bungee jump tower. It was a cool thing to have at the mall, and while it was somewhat popular, I don't think it was popular enough to keep it open. Since the zip lines were installed, every time, I've been at the mall, they've been regularly in use.
A couple of slides that used to be in the park include a raft racer one, which had 3 slides. This was removed to make room for the Flowrider. There was also a lazy river, which was cool. There were two paths you could take. Both paths started and ended at the same points, but you could choose a slower, more relaxed way, or a faster one that featured drops and tunnels. As far as I know, the "river" is still there but hasn't been used for a number of years. I don't know the exact reasoning as to why it was closed.
All in all, I think the water park holds up well for being 33 years old. They seem to keep up with the times and bring in new attractions to keep the park fresh.
The mini golf course you checked out actually originally opened as a mini-golf version of Pebble Beach (trees, water features, sand traps). It was in the mid/late 90's that it was re-themed to its current theme. I think the original theme fit much better, especially with "Europa Blvd" above.
Up until 2010 or 2011, there also used to be a giant animatronic dragon that breathed fire every 30 minutes and had a light show to go along with it. It was removed due to maintenance issues/costs.
There was an attraction in the mall called "Lazer Maze". I'd best describe it as a "target shooting dark ride" but on foot. It had large animatronic characters and other animated props and various targets that you had to shoot during your walk thru. It closed in the late 1980's. Legendary Walt Disney Imagineer Rolly Crump was recruited for the development of the attraction.
Again, happy to see that you had a great trip, and survived the Edmonton winter, haha! Though I'm not really a fan of "extreme" coasters, every time I go to the mall, make a trip into Galaxyland and watch Mindbender for a couple runs.