Wow, that's a lot of issues. Conversely, I have a 2011 Sport with 60,000 miles that has never has 1 issue. No PTU seals, no audio or Sync issues, nada. As for performance, I put an AFE dry filter in it, and my GTech pro says 6.5-6.7 to 60 consistently. With a Tribeca running about 7.8 to 60 under perfect conditions, I doubt you get "smoked". But hey, good luck with the repairs and remember that you would spend $10-20 thousand more for a comparable import such as an X3 Sport, X5 sport 3.0, Audi Q5 3.2, ML350 or the like and have just as many or more issues. My "other" car is a 2012 Grand Cherokee SRT8, maybe you should take a look at that, I smoke everything under an $80 grand window sticker (except those pesky Corvettes). I get 12 MPG doing it, but its fun!
Good luck