[WorldMaker]

Personally, I've considered and rejected them. :)

"youse" falls into the bad pattern of also picking up "guys" or "all" as hangers on, in my opinion, defeating the purpose. ("youse guys" being the terrible patriarchic movie Mafioso cliché, and "youse all" a terrible Frankensteinian monster I've heard far too frequently.)

"yinz" to me looks and sounds more like a weird pharmaceutical than an English word, and y'all aren't going to convince me otherwise. ;)

But of course, my opinion is biased by geography and familiarity.