None of the 5 songs you listed should be dropped completely, but they don't deserve to be played every or nearly every night either. Just rotate them with other songs from the era that work just as well (Last Man Standing, Just Older, Superman Tonight, One Wild Night, etc.) If WLOL was only played once in awhile, no one would be sick of it.

I voted for WGIGO because it is the weakest song of the bunch, but it is kind of fun live.