vCenter on Windows is a dead end. The 6.7 is the last version for windows. Upgrade now or next year.... your choice.
As you mentioned VMware is moving away from Windows platform. As per your update, View is also installed on the same machine as the vCenter, so you will not be able to migrate the vCenter as the source Windows vCenter will be powered off as part of the process.
So I would suggest you to work on moving the View component outside the vCenter machine and migrate the vCenter to VCSA.
VCSA Pros :
No need for extra MS licenses.
The embedded PostgreSQL database is sufficiently scalable and robust to cater for most environments; 1000 hosts and 10000 VMs.
Easy to deploy and all the major configurations are only available with VCSA.
vSphere Install-Upgrade Support
Don't bother with the windows vcenter, and I'd look at your needs as well for the view composer and linked clones are depreciated as of horizon 7.10 I beleive. Almost anything you can do with linked clones can be done with instant clones now.