I share your shudders at some of the up-dating. There are some horrors.

Rigoletto is such a simple story that it can be revised into a new locale without too much damage to the original plot. I have to admit that some of the subtitles, if they accurately reflected changes in the dialogue, were rather silly. Supposedly "Rat Pack" time is evoked, but the dialogue fell flat, at least to my ears.

There is a weapons change in Rigoletto, the sword as replaced by a large switchblade.