They could be the little things you noted in the songs or even major general flaws regarding the band's sound/members.
YouTube recommended me "WWBTF" & I remembered how 'fan outrage' had led to Richie adding a solo over the original version that just included a Beatle-esque bridge (in Richie's words). I wondered if we could hypothetically correct certain things that annoy us in some songs.
Let's start with this: The ending of Last Cigarette. Instead of the annoying background vocals/chorus repeat "No one told me she told me the last cigarette", I wish it had a short guitar solo/melody to end things ala Flesh & Bone/Always/Saturday Night. IMO a lot of songs would benefit from this treatment