Tiny/mini/micro makes up my server environment (and two customs using old cases and replaced parts).
Storage is a 1520+ and the two customs, with the 1515+ for backups I don’t want to lose (syncs to two other locations).
Tiny/mini/micro is the majority of compute tasks, mostly proxmox, LXC’s, and a few VMs.
The little machines have plenty of processing power, usually nvme but I can add it on if needed. Combine it with network storage, and you don’t need anything else imo.
Bonus is they are small and cheap as off lease machines being auctioned off.