[G1 Android Development] tom0769:
I always remove GoogleFeedback and MarketUpdater either using dsi-xda-kitchen/update-zip-packager or after installing a rom and gapps the following script via adb.

No negative experiences.

#!/bin/sh
adb remount
adb shell rm -f /system/app/VoiceDialer.apk
adb shell pm uninstall com.android.voicedialer
adb shell rm -f /system/app/OneTimeInitializer.apk
adb shell pm uninstall com.google.android.onetimeinitializer
adb shell rm -f /system/app/GooglePartnerSetup.apk
adb shell pm uninstall com.google.android.partnersetup
adb shell rm -f /system/app/CMStats.apk
adb shell pm uninstall com.cyanogenmod.stats
adb shell rm -f /system/app/DSPManager.apk
adb shell pm uninstall com.bel.android.dspmanager
adb shell rm -f /system/app/GoogleFeedback.apk
adb shell pm uninstall com.google.android.feedback
adb shell rm -f /system/app/Browser.apk
adb shell pm uninstall com.android.browser
adb shell rm -f /system/app/Talk.apk
adb shell pm uninstall com.google.android.talk
adb shell rm -f /system/app/RomManager.apk
adb shell pm uninstall com.koushikdutta.rommanager
adb shell rm -f /system/app/FOTAKill.apk
adb shell pm uninstall com.cyanogenmod.android.fotakill
adb shell rm -f /system/app/CarHomeGoogle.apk
adb shell pm uninstall com.google.android.carhome
adb shell rm -f /system/app/CarHomeLauncher.apk
adb shell pm uninstall com.android.cardock
adb shell rm -f /system/app/Protips.apk
adb shell pm uninstall com.android.protips
adb shell rm -f /system/app/GenieWidget.apk
adb shell pm uninstall com.google.android.apps.genie.geniewidget
adb shell rm -f /system/app/GoogleQuickSearchBox.apk
adb shell pm uninstall com.google.android.googlequicksearchbox
adb shell rm -f /system/app/QuickSearchBox.apk
adb shell pm uninstall com.android.quicksearchbox
adb shell rm -f /system/app/ThemeManager.apk
adb shell pm uninstall com.tmobile.thememanager
adb shell rm -f /system/app/CMUpdateNotify.apk
adb shell pm uninstall com.cyanogenmod.updatenotify
adb shell rm -f /system/app/LiveWallpapersPicker.apk
adb shell pm uninstall com.android.wallpaper.livepicker
adb shell rm -f /system/app/Development.apk
adb shell pm uninstall com.android.development
adb shell rm -f /system/app/Email.apk
adb shell pm uninstall com.android.email
adb shell rm -f /system/app/ThemeChooser.apk
adb shell pm uninstall com.tmobile.themechooser
adb shell rm -f /system/app/BooksPhone.apk
adb shell pm uninstall com.google.android.apps.books
adb shell rm -f /system/app/VpnServices.apk
adb shell pm uninstall com.android.server.vpn
adb shell rm -f /system/app/GoogleBackupTransport.apk
adb shell pm uninstall com.google.android.backup
adb shell rm -f /system/app/OpenWnn.apk
adb shell pm uninstall jp.co.omronsoft.openwnn
adb shell rm -f /system/app/MarketUpdater.apk
adb shell pm uninstall com.android.vending.updater
adb shell rm -f /system/app/PicoTts.apk
adb shell pm uninstall com.svox.pico
adb shell rm -f /system/app/TtsService.apk
adb shell pm uninstall android.tts
adb shell rm -f /system/app/NetworkLocation.apk
adb shell pm com.google.android.location

Can also be run in a windows batch.

Afaik it's recommended to clean cache/dalvik cache afterwards in recovery.

I remember Sisterchick having posted somewhere an example of a flashable update.zip but don't know where exactly:confused:

That was also very convenient, just flash a rom, gapps (maybe kernel) and afterwards the update.zip which cleans up the rom:)