I don't disagree, but what I think makes the Burger King jersey, the Thrashers alt, and OP's Isles alt particularly worse the rest is because they adhere to the uniform standards of different sports. The Burger King jersey may as well be a 90s soccer jersey, while the others look more like football jerseys than hockey uniforms.
All the jerseys introduce something new, and the Kings' alt introduces something fun, but none of them work within the confines of hockey as a sport. The Kings' jersey is the worst of 'em because it introduced gradients and a chest patch, which have never been used in hockey. The other jerseys were certainly unconventional, but still used elements that made a little sense in hockey. Collegiate teams use the football-style text/number, and the striping was relatively normal, though still bad, during the Reebok Edge period.
The fishsticks jerseys are the only ones in this thread so far that introduce something both new and fun that actually makes sense in the sport of hockey, IMO. They don't belong in this thread at all.