some thoughts:
- Intel is involved in active developing linux, esp. LAN, GPU (driver i915), chipset (?), wifi
I would suggest to stay completely with Intel (GPU, LAN, WIFI,..., the NUC) and no derivations (Gigabyte, ...)
you're on a save(r) side
- newer NUC's => longer support
- newer NUC's, esp. newer Intel GPU => maybe currently(!, WIP) only support with LE nightly: in-kernel GPU driver "i915": kernel 5.15.y versus 5.10.y)
- newer NUC's, esp. Video Format "AV1" => maybe currently no or never support for that video format in LE
- be aware: some NUC lacks audio output via cinch (?) if you need this; so audio only via HDMI /DP
- be aware: NUC with non-intel GPU (nvidia) maybe no support by LE (in the future)
- is the harmony website still online to configure the CIR/Harmony for that newer NUC ?
- and double check the connection NUC <=> TV/Audio (=> user forum of that TV and/or the NUC Specs)
- look out for bring back support and fee's (if something overlooked)
Intel GPU and Features e.g. Video Format (=> chap.: "GPU video acceration"):