[Sony Xperia P, U, Sola, Go] Terenn:
I have long strived to acheive an AOSP look for my XPU, but without loosing some of the actually good Sony apps, like their calculator, calendar, clock and Walkman. This and performance are my primary goals.

I present you my edits (I will explain the reasoning for some further on):

framework-res.apk — default themes changed to Holo, all Sony themes converted to use Holo, removed music buttons from the lockscreen, Sony themes only change icon accents and illumination bar color (no colored backgrounds)

SystemUI.apk — AOSP status bar icons, removed battery percentage

system_fonts.xml — system font reverted to Roboto

I removed the lockscreen buttons, firstly, because I use the AOSP locker (remove unxt.....) and the buttons are poorly aligned (I know there is a fix); and, secondly, because there is a permanent notification from the Walkman app, where you can press play/pause/next/prev and the notification bar is accessible even when the device is locked.

I removed the battery percentage, because, IMHO, it is distracting =)

I will not add any toggles to SystemUI, as I haven't found a version where there is a button to open the 2G/3G settings (not just switch data off; where I live, the 3G coverage is flaky, and I have to switch to 2G sometimes in order to stop the phone from jumping from cell to cell and wasting battery). I use my own widget for that.

The Sony apps that I use all work perfectly fine with my changes to framework-res.apk; I believe there should be no problems with any other Sony apps (did not test them myself).

In order to achieve the closest possible resemblance to AOSP, I have removed some stock apps and use some replacements; here is a listing of the apps I have in /system/app:

ATService.apk
ApplicationsProvider.apk
AudioEffectService.apk
Backup-Restore.apk
Backup-wizard.apk
Bluetooth.apk
Browser.apk
CalendarProvider.apk
CameraExtensionPermission.apk
CdfInfoAccessor.apk
CertInstaller.apk
CredentialManagerService.apk
CustomizationProvider.apk
CustomizedApplicationInstaller.apk
CustomizedSettings.apk
DefaultCapabilities.apk
DefaultContainerService.apk
DownloadProvider.apk
DrmDialogs.apk
DrmProvider.apk
FaceLock.apk
GMS_Maps.apk
GenericApplicationInstaller.apk
Gmail.apk
GoogleBackupTransport.apk
GoogleCalendarSyncAdapter.apk
GoogleContactsSyncAdapter.apk
GoogleLoginService.apk
GooglePartnerSetup.apk
GoogleQuickSearchBox.apk
GoogleServicesFramework.apk
HTMLViewer.apk
Initial-boot-setup.apk
KeyChain.apk
LocalContacts.apk
MediaProvider.apk
MediaUploader.apk
MemcardTransportService.apk
Mms.apk — extracted from [URL="http://xdaforums.com/showthread.php?t=1943184"]this ROM[/URL]
MusicFX.apk
NetworkLocation.apk
OneTimeInitializer.apk
PackageInstaller.apk
PartnerBookmarksProvider.apk
Phonebook.apk
Phonesky.apk
PicoTts.apk
Radio3.apk
ReadyToRun.apk
SEMCSetupWizard.apk
SecureClockJava.apk
SemcAutoPowerOff.apk
SemcCalculator.apk
SemcCalendar.apk
SemcCamera3D.apk
SemcCameraUI.apk
SemcClock.apk
SemcCnapProvider.apk
SemcContactsProvider.apk
SemcIllumination.apk
SemcMetadataCleanup.apk
SemcMusic.apk
SemcMusicVisualizer.apk
SemcNotes.apk
SemcPhone.apk
SemcPowerSaveModule.apk
SemcSettings.apk
SemcSimDetection.apk
SemcTelephonyProvider.apk
SemcWarrantyTime.apk
ServiceMenu.apk
Settings.apk
SettingsProvider.apk
ShutDownAnimation.apk
SimContacts.apk
SoundEnhancement.apk
SoundLevelAlert.apk
SoundPicker.apk
SoundRecorder.apk
StartupFlagV2.apk
Stk.apk
Street.apk
SuperStamina.apk
Superuser.apk
SwiqiMasterReset.apk
SystemUI.apk
TetherEntitlementCheck.apk
ThemeManager.apk
UnsupportedHeadsetNotifier.apk
UsbTransportService.apk
UserDictionaryProvider.apk
UseragentProvider.apk
VerifyCertificatesDummyAppApplication.apk
VerifyCertificatesDummyAppMedia.apk
VerifyCertificatesDummyAppPlatform.apk
VerifyCertificatesDummyAppShared.apk
VoiceSearch.apk
VoipCallLogProvider.apk
VpnDialogs.apk
WapPush.apk
WapiCustomization.apk
WiFiApState.apk
YouTube.apk
bootinfo.apk
com.modoohut.xmissedcall.apk
enhancedusbux.apk
semcservice.apk
usb-mtp-backup-transport.apk
usb-mtp-marlin-wrapper.apk
usb-mtp-update-wrapper.apk
usb-mtp-vendor-extension-service.apk
usbotg.apk

Apps I use:

Nova Launcher

exDialer + Black ICS Theme

Mms.apk (extracted from this ROM)

Screenshots

Install via CWM

THIS MOD WAS TESTED ONLY ON MY XPERIA U ON ICS. I TAKE NO RESPONSIBILITY FOR ANY DAMAGE TO YOUR PHONE/SOFTWARE. INSTALL AT YOUR OWN RISK.

Download CWM zip here

P.S. This is my first mod, so tell me if I have done something wrong.

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Update:

Instructions for P: http://xdaforums.com/showpost.php?p=33085509&postcount=5