This airport is definitely underrated. First off when traveling overseas, one of the biggest concerns is getting in contact with friends and family, which in this airport is very possible with the free access to Wi-Fi. In addition unlike most places with free Wi-Fi, you can watch Netflixs, you tube, etc. to make your layover time go by quickly.
The Airport also has a few restaurants, places to shop and just chill to make your wait easier. One thing that could make this airport better are more restaurants and shopping options. Also your experience may really vary based off what airline you choose. I've flown to Toronto a number of times over the last year and I would recommend Air Canada, if you have a choice. Their gates usually have more restaurants and better variety of shops.