This is my home airport, so it's easy to fall in the trap of "familiarity breeds contempt." But really, de-icing at YYZ is fast compared to other airports like CDG. As for the "too much walking" comment, I agree - at least there are high-speed slideways, but still, it seems a bit far. Then again, FRA and ORD have those long under-tarmac walkway tunnels (always seem to have to run when connecting through them), so maybe it's just part of an airport that handles big planes.
My only real tips for major improvement:
1. RAIL LINK TO DOWNTOWN! Look at Singapore, Frankfurt, London, Lyon, Hong Kong, San Francisco... Toronto is lagging here, and we need to step up our game.
2. Canadian Customs arrival "hall" in T1. This low-ceiling, squat, plain and boring room is not the best thing to show new visitors to our country or the welcome Canadians home. At least Singapore has high ceilings and short lines!
3. Better WiFi in the T1 AC lounge. The normal YYZ WiFi is great, and actually better than the lounge WiFi. What's with that?

I visited LBP both 2011 and 2012. It was a good experience from what you know from Arlanda (Sweden). Both customs, and all other personal at LBP was very helpful and nice. I don´t agree at all with the complains about the service there.

I agree with the last poster, they can be very ignorant going through although it is my home airport. Last time I was through in December, I was asked the same question, by an Immigration Official as the previous poster said. I said I wanted a clarification on what she asked in her very thick Asian accent, not to speak poorly of anyone but WTF. How could I not speak English if I lived in Canada all my life? I said I was born here more than 40 years ago and it was obvious I had been in Canada longer than her. I was shocked and insulted. How could I be asked such a question, when my Canadian passport says I lived here all my life.

About 8:00 pm, 15th January, 2013, in the customs of U.S. connection of Toronto International Airport, after showing documents, I was reminded to throw the fruit taken with me. There was personnel pointing the way I should go, I thought I just needed to find appointed trash place to throw my apple, so when I walked closing the door, it automatically opened, I was not sure this was the right way so I turned to the passage next to the door. I took probably 6 steps and heard there was a man yelling at me, " where are you going?......(really harsh words)....I saw her trying to avoid....." He kept yelling without giving me a chance to explain, and he didn't listen to me at all. Without communication or further proof, he already defined me as a liar. I did walk away from the door, he did see me walking away from the door, but did he see me "avoid"????? Avoiding is a psychological change, could he see? It is absolutely bias. When he yelled at me, he looked like going to swallow me, I was scared to death. The way he works is not like a security guard, instead, acting like a killer!

The supervisor said to me that he saw and heard everything. If he did, he definitely needed to apologize for his colleague's statement which was full of bias. The supervisor obviously stood on that personnel's side, questioning me how could I go to U.S. for school if there was language barrier when I told him that the rude working staff was taking advantage of me not speaking English very well.

There was a fault in this matter on my side. My fault was I should have asked more clearly when I was not quite sure how to do something instead of trying to figure it out by myself, however, it doesn't mean I deserve to be yelled at, embarrassed, and insulted in public.

The last thing I want to say is everyone wants and has right to be treated in the way that you expect to be treated! PLEASE show your power to the people who endanger the safety of the country rather than people who are weaker than you. When you are standing and working in the international airport, you represent not just yourself but also countries. DO NOT jeopardize the civilized, respectful impression of the great U.S.A and Canada. DO NOT destroy the huge admiration we have for these advanced countries with human rights. JUST because of WRONG working staff. Not worth it!

Firstly they should have kept the name Toronto, who, on the other side of the world trying to plan a trip, knows who Lester B Pearson is? A fantastic facility. It's big, clean and well laid-out. Too bad the employees are rude, grumpy and generally unhelpful. Compared to the 70's, it's way cleaner. With government restrictions on who can and cannot provide taxi/limo service, makes for a very expensive ride to and from the airport.