[Samsung Galaxy S10 ROMs, Kernels, Recoveries, & Ot] DaReDeViL:
I did. I used a modded unencrypted cscfeature.xml of my actual csc which I placed in /product/omc/XXX/conf/ then set permissions to 644 and reboot et voila... Now I have my favourite features like call recording + caller id + network monitor + camera shutter sound option.

Here are the features sets I have, just pick the ones you need accordingly :

<CscFeature_SystemUI_SupportDataUsageViewOnQuickPanel>TRUE</CscFeature_SystemUI_SupportDataUsageViewOnQuickPanel>
<CscFeature_LockScreen_EnableOperatorWallpaper>TRUE</CscFeature_LockScreen_EnableOperatorWallpaper>
<CscFeature_SystemUI_ConfigDefQuickSettingItem>Wifi,SilentMode,MobileData,Flashlight,Bluetooth,PowerSaving,Location,RotationLock,Performance,ScreenCapture,BlueLightFilter,PersonalMode,AirplaneMode,WifiHotspot,Nfc,Aod,AllShareCast,DeviceVisibility,DormantMode,Sync,UHQ,WifiCalling,VoLte</CscFeature_SystemUI_ConfigDefQuickSettingItem>
<CscFeature_SmartManager_DisableAntiMalware>TRUE</CscFeature_SmartManager_DisableAntiMalware>
<CscFeature_VoiceCall_ConfigRecording>RecordingAllowed</CscFeature_VoiceCall_ConfigRecording>
<CscFeature_SystemUI_SupportRecentAppProtection>TRUE</CscFeature_SystemUI_SupportRecentAppProtection>
<CscFeature_SystemUI_SupportAssistanceAppChooser>TRUE</CscFeature_SystemUI_SupportAssistanceAppChooser>
<CscFeature_Common_ConfigYuva>powerplanning|reserve|zeroforward|mileage|dashboard</CscFeature_Common_ConfigYuva>
<CscFeature_SmartManager_ConfigSubFeatures>roguepopup|autoclean|autolaunch|autorestart|storageclean|backgroundapp|applock|notificationmanager|cstyle|fake_base_station|appclean|devicesecurity</CscFeature_SmartManager_ConfigSubFeatures>
<CscFeature_SmartManager_ConfigDashboard>dual_dashboard</CscFeature_SmartManager_ConfigDashboard>
<CscFeature_Setting_CustNetworkSelMenu4>LTEONLY</CscFeature_Setting_CustNetworkSelMenu4>
<CscFeature_Setting_SupportRealTimeNetworkSpeed>TRUE</CscFeature_Setting_SupportRealTimeNetworkSpeed>
<CscFeature_Setting_EnableMenuBlockCallMsg>TRUE</CscFeature_Setting_EnableMenuBlockCallMsg>
<CscFeature_Message_EnableSpamFilteringEngine>TRUE</CscFeature_Message_EnableSpamFilteringEngine>
<CscFeature_RIL_ForceConnectMMS>TRUE</CscFeature_RIL_ForceConnectMMS>
<CscFeature_Message_ImageResizeQualityFactorWhenAttach>TRUE</CscFeature_Message_ImageResizeQualityFactorWhenAttach>
<CscFeature_Message_EnableSMSPcheckWhenSendSMS>TRUE</CscFeature_Message_EnableSMSPcheckWhenSendSMS>
<CscFeature_Message_EnableMenuMmsDeliveryTime>TRUE</CscFeature_Message_EnableMenuMmsDeliveryTime>
<CscFeature_Message_AddSendOptionInComposer>TRUE</CscFeature_Message_AddSendOptionInComposer>
<CscFeature_Message_DisableSmsToMmsConversionByTextInput>TRUE</CscFeature_Message_DisableSmsToMmsConversionByTextInput>
<CscFeature_Message_EnableMsgTypeIndicationDuringComposing>TRUE</CscFeature_Message_EnableMsgTypeIndicationDuringComposing>
<CscFeature_Message_EnableSaveVMessage>TRUE</CscFeature_Message_EnableSaveVMessage>
<CscFeature_Message_EnableSaveRestoreSDCard>TRUE</CscFeature_Message_EnableSaveRestoreSDCard>
<CscFeature_Common_EnableAirMessage>TRUE</CscFeature_Common_EnableAirMessage>
<CscFeature_Camera_ShutterSoundMenu>TRUE</CscFeature_Camera_ShutterSoundMenu>
<CscFeature_Camera_EnableCameraDuringCall>TRUE</CscFeature_Camera_EnableCameraDuringCall>
<CscFeature_Clock_DisableIsraelCountry>TRUE</CscFeature_Clock_DisableIsraelCountry>
<CscFeature_Common_AutoConfigurationType>NO_DFLT_CSC, SIMBASED_OMC</CscFeature_Common_AutoConfigurationType>
<CscFeature_Common_ConfigEmergencyModePackages>com.ipsec.service,com.sec.android.providers.iwlansettings,com.sec.android.providers.mapcon</CscFeature_Common_ConfigEmergencyModePackages>
<CscFeature_Common_EulaVersion>2</CscFeature_Common_EulaVersion>
<CscFeature_Common_SupportWcdmaInSlave>TRUE</CscFeature_Common_SupportWcdmaInSlave>
<CscFeature_Email_AlignmentForRTL>TRUE</CscFeature_Email_AlignmentForRTL>
<CscFeature_Email_DisableFontAttributeDuringComposing>Bold, Italic</CscFeature_Email_DisableFontAttributeDuringComposing>
<CscFeature_Framework_EnableBidirection>TRUE</CscFeature_Framework_EnableBidirection>
<CscFeature_RIL_ConfigProvideCellInfo>enable</CscFeature_RIL_ConfigProvideCellInfo>
<CscFeature_Setting_DisableIsraelCountry>TRUE</CscFeature_Setting_DisableIsraelCountry>
<CscFeature_Setting_IncludeApn4SwUpdate>TRUE</CscFeature_Setting_IncludeApn4SwUpdate>
<CscFeature_Sip_LangQwertyType4HwKey>HW_KEYBOARD_COUNTRY_TYPE_ARAB_AZERTY</CscFeature_Sip_LangQwertyType4HwKey>
<CscFeature_Vision_ConfigImageSearch>PTRXX</CscFeature_Vision_ConfigImageSearch>
<CscFeature_Vision_ConfigPlace>FSRXX</CscFeature_Vision_ConfigPlace>
<CscFeature_Vision_ConfigShopping>NLLXX</CscFeature_Vision_ConfigShopping>
<CscFeature_Vision_ConfigTextTranslator>GGLXX</CscFeature_Vision_ConfigTextTranslator>
<CscFeature_Vision_ConfigWine>NLLXX</CscFeature_Vision_ConfigWine>
<CscFeature_Weather_ConfigCpType>TWC</CscFeature_Weather_ConfigCpType>
<CscFeature_Weather_SupportCheckingDisputeArea>TRUE</CscFeature_Weather_SupportCheckingDisputeArea>
<CscFeature_Web_EnableAutoSimHomeUrlInProfile>TRUE</CscFeature_Web_EnableAutoSimHomeUrlInProfile>
<CscFeature_Web_SetHomepageURL>http://www.google.com</CscFeature_Web_SetHomepageURL>
<CscFeature_Common_ConfigSvcProviderForUnknownNumber>whitepages,whitepages,off</CscFeature_Common_ConfigSvcProviderForUnknownNumber>