For me, it's the piping across the chest. It just looks ridiculous, IMO, and really screams 80s. It kind of reminds me of Futurama, how so many shirts are "futurized" by adding those funky details on the shoulder... it just makes the uniform look like a parody of what people thought the future would look like in the 80s.
Fair enough...I think those lines look cool, though. Certainly a lot better-looking than those way too high collars of the later seasons. Nice avatar, by the way. Toronto never should have changed that logo. Just looking at it fills me with happy feelings of nostalgia. It's so classic.