[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] YasharF:
Debloating UCUFNJ1

Just sharing since others may be looking for the same. I used ADB to debloat UCUFNJ1. The following are what I executed.

After these were done (the phone may be a little unresponsive while they go through): I rebooted the phone into recovery and cleared cache and dalvik; then used Titanium Backup to remove anything that was not removed (probably due to google play store updating them, if you put the phone in airplane mode immediately after the first startup with the ROM you may not need to use Titanium Backup since google play store doesn't get a chance to update anything).

adb-toolkit.exe shell su -c "mount -o rw,remount /system"

adb-toolkit.exe shell su -c "rm system/app/Books.apk"
adb-toolkit.exe shell su -c "rm system/app/Drive.apk"
adb-toolkit.exe shell su -c "rm system/app/Gmail2.apk"
adb-toolkit.exe shell su -c "rm system/app/Hangouts.apk"
adb-toolkit.exe shell su -c "rm system/app/Magazines.apk"
adb-toolkit.exe shell su -c "rm system/app/Music2.apk"
adb-toolkit.exe shell su -c "rm system/app/PlayGames.apk"
adb-toolkit.exe shell su -c "rm system/app/PlusOne.apk"
adb-toolkit.exe shell su -c "rm system/app/YouTube.apk"
adb-toolkit.exe shell su -c "rm system/app/Videos.apk"
adb-toolkit.exe shell su -c "rm system/app/talkback.apk"

adb-toolkit.exe shell su -c "rm system/app/DeviceHelp.apk"
adb-toolkit.exe shell su -c "rm system/app/DeviceHelp.odex"
adb-toolkit.exe shell su -c "rm system/app/SSuggest_J_DeviceOnly.apk"
adb-toolkit.exe shell su -c "rm system/app/SamsungMusic10P.apk"
adb-toolkit.exe shell su -c "rm system/app/SamsungHub.apk"
adb-toolkit.exe shell su -c "rm system/app/SamsungHubUpdater.apk"
adb-toolkit.exe shell su -c "rm system/app/SamsungBooks_HD.apk"
adb-toolkit.exe shell su -c "rm system/app/SamsungAppsUNA3.apk"
adb-toolkit.exe shell su -c "rm system/app/HelpHub.apk"
adb-toolkit.exe shell su -c "rm system/app/HelpHub.odex"
adb-toolkit.exe shell su -c "rm system/priv-app/SamsungVideoLITE.apk"

adb-toolkit.exe shell su -c "rm system/app/SmartWifi_vpl_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/WISPr_Android22_postpaid_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/YPMobile_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/attMessages_vpl_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/myATT_vpl_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/Telenav_vpl_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/FamilyMap_vpl_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/LiveTv_vpl_ATT.apk"

adb-toolkit.exe shell su -c "rm system/priv-app/DriveMode_ATT.apk"
adb-toolkit.exe shell su -c "rm system/priv-app/digitalLocker_ATT.apk"

adb-toolkit.exe shell su -c "rm system/app/YahoonewsDaemon.apk"
adb-toolkit.exe shell su -c "rm system/app/YahoonewsDaemon.odex"
adb-toolkit.exe shell su -c "rm system/app/YahoonewsWidget.apk"
adb-toolkit.exe shell su -c "rm system/app/YahoonewsWidget.odex"
adb-toolkit.exe shell su -c "rm system/app/YahoostockDaemon.apk"
adb-toolkit.exe shell su -c "rm system/app/YahoostockDaemon.odex"
adb-toolkit.exe shell su -c "rm system/app/YahoostockWidget.apk"
adb-toolkit.exe shell su -c "rm system/app/YahoostockWidget.odex"
adb-toolkit.exe shell su -c "rm system/app/BeatsMusic_vpl_ATT.apk"
adb-toolkit.exe shell su -c "rm system/app/ChatON_MARKET.apk"
adb-toolkit.exe shell su -c "rm system/app/Flipboard.apk"

So far, the phone is working fine. Let me know if you run into any issues. :)

Note that root is required.

For ADB, I had the latest Android Studio installed.

If your phone is not getting recognized, you may need to get the samsung driver: I searched google for "samsung kies" which pointed me to Samsung for downloading the driver.

Sometimes the phone may not come up in USB debug mode, where "adb devices" command does not show the phone. For me, toggling MTP USB Mode and USB debug mode a few times eventually fixed this. This problem happened more than once when I was poking around.