Any plans for better System platform OPC UA management?

Yes, we have some ideas for this and I'm thinking much like you do that it would ideally be part of attribute configuration so that one can leverage the fantastic template-based standardization in App Server to manage this at scale and to ensure consistency.

We will likely pursue a common approach to both OPC UA Server and MQTT Publisher but there's no firm decision yet as we are somewhere between idea stage and starting design work.

Yes, we have some ideas for this and I'm thinking much like you do that it would ideally be part of attribute configuration so that one can leverage the fantastic template-based standardization in App Server to manage this at scale and to ensure consistency.

We will likely pursue a common approach to both OPC UA Server and MQTT Publisher but there's no firm decision yet as we are somewhere between idea stage and starting design work.