ZeusOS-v2.7 (beryllium 5/3/2024 vanilla) Debloat : OK (not for telephony / bluetooth, but for my intended application it works)
Last updated : 8/8/2024
Changelog :
5/9/2024
- Initial commit

Pre-debloat (i dunno, probably better than letting system consume too much resource for nonexistent tasks?)
- cell broadcast (optional) : settings > apps & notifications > Wireless Emergency alerts - disable everything
- traceur : settings > system > developer options > system tracing - turn all off, clear saved traces

/system/apex
com.android.cellbroadcast.capex
com.android.neuralnetworks.apex

/system/etc
/default-permissions/miuicamera-permissions.xml

/system/app
BasicDreams
Bluetooth
BluetoothMidiService
CarrierDefaultApp
CtsShimPrebuilt
LiveWallpapersPicker
OmniJaws
PrintRecommendationService
PrintSpooler
SimAppDialog
Stk
Terminal
Traceur
WallpaperBackup

/system/priv-app
BlockedNumberProvider
BuiltInPrintService
CalendarProvider (optional)
CallLogBackup
CellBroadcastLegacyApp
ContactsProvider
CtsShimPrivPrebuilt
ManagedProvisioning
MicroG
MiuiCamera
MiuiEditor
MiuiGallery
MmsService
OPCalculator
OPDialer
OPMessage
OPRecorder
Seedvault
Telecom
TelephonyProvider
TeleService
ViMusic
YouTube

/system/product/app
Browser2 / Music / QuickSearchBox > Fossify Calendar / Gallery / OpenCamera
LatinIME > SimpleKeyboard (rkkr)

/system/product/priv-app
Contacts
HotwordEnrollmentOKGoogleWCD9340
HotwordEnrollmentXGoogleWCD9340

/system/system_ext/app
EVERYONE (but leave the /app folder un-deleted)

/system/system_ext/priv-app
CarrierConfig
dpmserviceapp
EmergencyInfo
ims
qcrilmsgtunnel
QuickAccessWallet
WfdService

/vendor
/app/CneApp
/app/SoterService
/etc/cne

Setup
QS : DND, autorotate, flashlight, screenshot, volume panel, caffeine
adb shell commands (scuffed edition) : 
settings put global captive_portal_http_url (insert http url of decent captive portal provider that's not /e/ or Go-ogle)
settings put global captive_portal_https_url (insert https url of decent captive portal provider that's not /e/ or Go-ogle)
settings put global captive_portal_fallback_url (insert fallback url of decent captive portal provider that's not /e/ or Go-ogle)
settings put global captive_portal_other_fallback_urls (insert "other_fallback_urls" url of decent captive portal provider that's not /e/ or Go-ogle)
settings put global ntp_server about:blank (or replace about:blank with any decent ntp server, such as pool.ntp.org if you need network time)
settings put secure show_rotation_suggestions 0

Additional notes : 
- Reignz' TWRP 3.7.0-A9 (non system_ext) is required. The maintainer recommended 3.6.0-A9 but whenever I used it to flash ZeusOS I got trapped between unable to encrypt & having to factory reset until I switched recoveries.
- ZeusOS' DocumentsUI doesn't open Downloads on opening. Which is nice, since I now have the option to extract it (copy, not cut; I'm not dealing with the aftermath of the latter) for other ROMs...
- ZeusOS contains apps from various vendors - OnePlus calculator, clock, launcher, recorder, & sms; Xiaomi camera & gallery; and Revanced builds of microG & YouTube. Of all of them, I only kept the launcher.
- ZeusOS contains android.permission.group.UNDEFINED enabled for every app. I don't know what it does so I disabled them manually for every app. Unused apps re-enable themselves after reboots though, so that sucks for me. Fortunately that seemed to be a recovery issue, from when I used the system_ext version.
- microG should work as user-app in ZeusOS as long as the toggle for it is enabled.
- Conclusion : Yet another featurefest I see, this time with a less-than-perfect implementation & some missing options. Including vendor bloat from OnePlus might be neat to some, but personally I don't like it. In addition, there's that android.permission.group.UNDEFINED thing, which makes me already far less willing to daily drive ZeusOS. If that were sensors permission (and/or the network permission if per-app data restriction was absent)...