Hi.,
What could default route on various VRF have any negative effect on a router operation:
E.g
ip route vrf MAINLAND 0.0.0.0 0.0.0.0 42.100.67.19 name MAINLAND
ip route vrf ISLAND 0.0.0.0 0.0.0.0 44.10.65.45 name ISLAND
ip route vrf FCT_H 0.0.0.0 0.0.0.0 192.100.75.50