Would an Eero router be recommended with the upcoming Gigabit Fiber service? If not, what router(s) would best take advantage of the higher speeds?
The service comes with a full Gigabit capable router and firewall, soon to be enabled with IPv6 routing and firewalling too. If you need more than the four Ethernet ports, add a small Gigabit Ethernet switch behind it. If you need a second WiFi access point to extend coverage, connect an 801.11AC WiFi device set in "Bridge" mode; match the SSID and WEP key from the side of the Sonic router for seamless in-home roaming.
But, some want VLAN, QoS, port forwarding, and a separate subnet for guests, and so forth. Based on my googling and reading some forum posts, and without reading any official manuals (as I can't find any), that Pace unit probably is not enough.