TOP missing XG (basic) features (all present in UTM9):
NAT rules: cloning, grouping
Static routing: cloning, descriptions, use objects
Objects: create object inside group (i.e. create IP host inside IP host group)
HA: Unliked status like in UTM9, Monitoring for VLAN interfaces (without physical interface IP set), Backup interface
Interfaces: Allow deconfigure interface without deleting all VLAN interface on that physical port
Registration process: automatic passive box registration via active XG during HA creation
Sophos Connect & SSL VPN: Allow use of IP host group insite resources
DHCP: allow Dynamic IP lease accross Statis IP MAC mapping (and exclude internally) + DHCP relay over xfrm