One needs to obtain a designer license in order to have a server license.
It may be a good idea to package those two don't you think, and now it's ok to install designer on a Server OS.
It would be awesome if you automatically have a virtual desktop environment to connect to...when you get a server license,
The following is a slide from Inspire 2016 and the client's are already doing this
1. For keeping the running workflows unaffected by docking undocking workstations
2. It also increases the performance by getting the designer closer to the data
3. It would also be safe to share company analytics capabilities with outsider without giving them direct access to downloadable data etc.