GMD is pretty solid all around, but it could have been better. I personally found the bar scene completely unnecessary and detrimental to the film overall. Just wasted too much time; characters who make a single appearance in a film shouldn't usually have a song (especially in a film with next to no music).
The end fight is one of the best Disney has done though, definitely on par with the Renaissance age villain fights. Ratigan going berserk, tearing off his formal attire and finally embracing his true nature was compelling.
--
Still smilin'
:>