Hi,
2 nics by subnet is sufficient, so remove the third card . And add a redundancy to your mgmt, vmotion and production network. DEV / Network is less important that production network. But in your diagram, DEV network have a redundancy.
And then merge your vswitch 0/5/6. You will use explicit failover configuration for your vmnic on your port group.
Last thing: Your configuration is not the same on all your hosts. So please do the same, i see on your host vmware 5 , vswitch 6 is used for production and on vmware 3 it is vswitch 5. You need the same configuration,if not your HA and DRS will not work.
Regards,
Julien.