Hi,
From certain angle you can say that you are losing a poller; on the other hand, this integrated deployment with NCM on a separate server was only supported because of historical reasons from times when NCM didn't support additional pollers. NCM now scales in the same way as other Orion products and the engineering overhead required to support that scenario can be used for new features.
Is you infrastructure running on physical hardware? I assue yes, otherwise you could simply assign the resources of the old NCM server to the NPM server.
Regards,
Jiri