I know they hold some historical significance, but I wouldn't care one iota if they tore down the entire "Bear Line". There are so many better ways to exhibit bears these days.
I do believe that both the zoo's Black Bear(s) and Spectacled Bear(s) are quite old, so when they die I'd like to see these two exhibits renovated and connected to the polar bear exhibit, or atleast connected to each other and renovated for one species or the other.