I've been spending some time working on a similar ROM/Backup from scratch, built on fire OS version 22.214.171.124
(Highest without efuse burn)
Using the latest files (AFTV-MM-20221021) supplied by @tsynik
Latest Kernel supplied by @Pretoriano80
NTFS/F2FS/EXT4/exFAT OTG supplied by @Pretoriano80
Updated magisk (25.1.FTV)
Updated Leanback Launcher
Other Apps updated.
Some frozen Amazon apps, no OTA update etc. (non destructive debloat)
No play store/services (unnecessary and causes issues)
Quick menu on double click Home (Xposed Edge)
Build.prop tweaks (fast boot etc)
Everything working well so far.
If anyone is interested I can make a clean backup and start a new thread. I've reached out to the OP but believe he/she has not been active here for sometime.
Will need to make a backup clear of any credentials.
Does anyone know if there are any apps I can't include following XDA rules? (Cinema, CyberFlix etc)
Let me know if interested and I'll put something together.