I finish the first home router for the ISP part, #OpenWRT with modern Linux kernel.
For the OS, OpenWRT allow advanced usage, anti-theft system, firewall, route, mac filter, custom service/software, ssh, …
For the hardware part, it’s ARMv8 (64Bits) very powerful to manage vlan, SDN, PPPoE, wireguard, advanced route at 1Gbps speed. For the wifi, it’s wifi 6, IEEE 802.11ax, support 2.4GHz and 5GHz, with very very good range. WAN and all LAN port is 1Gbps.