Containerizing SharePoint server roles
The ability to have SharePoint server roles be hosted in containers. Running multiple SharePoint containers in one or more Windows Server OS instances. Having the same base file system so that when you apply patches to SharePoint, they all get automatically pushed to each SharePoint container on that server. The ability to move SharePoint containers to the cloud (Azure).
Interesting idea but for Sp2016 we have implemented zero downtime patching which isn't what you asked for but it seems to be on the right path.
Lets see how the votes go for this idea