The possibility to assign an public ip adres from an different IP pool.
It is possible to add an new public IP pool, only it is not possible to assign an IP address from that new IP pool to a new customer by using an offer and network quote. Or by creating an VM with an Public IP address and have the possibility to chose an IP address from that new pool.
Is it possible to have subnet assign for tenancy? E.g. ABC.com use external IP X.X.10.0/24, DEF.com use external IP X.X.20.0/24. We can pre-define firewall rules and route and make them isolated.