Banana Pi is now selling the BPI-R4, a 148 x 100.5 mm single-board computer designed as a router board. Sporting numerous LAN and WAN connections, the Banana Pi BPI-R4 also has three Nano SIM card slots and supports 5G, as well as the modern WiFi 7 standard.https://www.notebookcheck.net/Banana-Pi-BPI-R4-New-5G-and-WiFi-7-compatible-router-board-launches-for-just-over-US-100.772689.0.html
Wonder if it make sense to build a home router with this...