Not to pick but...
-low power - 3.7L v6 in a nearly 5k lb suv
-bad gas mileage - see above
-crappy dealer tactics - You chose the dealer
-window regulator going bad - Things break. Bought used correct?
-tiny little plastic clip inside door broke - Again things break. Bought used correct?
-limited amount of aftermarket items - Actually there is a ton of aftermarket gear for the WK. Performance for the 3.7L, you just have to look little there are plenty of guys on here that have intakes and the lot.
-build is cheap and plastic parts break easily - Jeep up till now has been that way.. so no surprise
-Low option of 4x4 is just AWD - 3.7L for you...
-Battery is unique and expensive - Battery isn't unique or different from any other lead acid battery you can buy... its that ALL batteries are $$ since LEAD is too.
-Car alarm is junk and goes off all the time (KARR issue with Jeep) - No comment...
-Some god aweful shifting/driveline issue- mopar norm... done the maintenance for it? Proper maintenance and not beating on it will make it last awhile
-Oil changes are the messiest i have ever had- Odd the 3.7L isnt much different layout than the 4.7L and its gotta be one of the easiest to do...hell they give you a spillway for the oil filter...none of the cars i've owned ever had that!
In short if you dont like it... get rid of it.. your paying for it and if you don't like what you have... get something else, nothing should be tying you to it.