Our plan is to provide all the features known in the current Protocol Integration, with modern protocols in the VMS API. This is planned to happen gradually, in the coming releases.
Please also take a look at the DevConnect presentation 23:42 Crash course into the Milestone Integration Platform (MIP) VMS API especially the roadmap bit at https://youtu.be/gfj37Pz62C4?t=1660
and the linked, and slightly more elaborated: Milestone Developer Conference 2021 - MIP API Gateway pre-release demo - YouTube