My personally opinion on the h616/8 line up is that the focus should be on stable and not LTS. Little to none of the official mainline patches are being back ported and the patches being used currently in LTS are kind of hack-a-noodle patches.
For example:
https://lore.kernel.org/linux-arm-kernel/CA+E=qVeMnQNrT8tNnHBnCL2Efy3VjbRAYQGMXstziCThRsiBDw@mail.gmail.com/T/
https://lore.kernel.org/linux-arm-kernel/20240419071450.7aiheeoyq35yjoo7@vireshk-i7/T/
The ones being currently used in Armbian I believe are either RFC's or taken from OPI. The thermal patch above is already in 6.9.y.
But with that said, if you have any questions feel free to hit me up and if I can, I'll help.