I don't think there are any fillers on UYI, apart from maybe My World. Each song is just a different flavour and style of GN'R's wide musical spectrum.
That's one of the reasons I'm still following GN'R - because I love nearly every song that they've released, not because of just 1 or 2 good songs.
I dont think there are any fillers either. I love every song gnr has ever written. The only song I havnt heard is Cornshucker. Never was able to hear it :{
Other than that I love every song on every album and the unreleased stuff...I only said fillers so I didnt have to name all the songs...