Still think its highly underrated to use fs-cache with NASes (usually configured with cachefilesd) for some local dynamically scaling client-side nvme caching.
Helps a ton with response times with any NAS thats primarily spinning rust, especially if dealing with decent amount of small files.
I have 4 M.2 drives in RAID0 with HDD and cloud backup. So far so good! I'm sure I am about to regret saying that...