You can detach and reuse the storage drive without disrupting the virtual server, which is quite useful. Additionally, it provides options like network security groups to protect virtual machines from unauthorized access.
Microsoft Virtual Server's cost was an area of concern...I feel Microsoft Virtual Server will be stopped in a couple of months or a couple of years, and it will be completely replaced with SQL Server data warehouse and Microsoft Fabric.
One feature I would like to see is better compatibility with macOS. Due to business policies, macOS isn't currently available in the Azure Marketplace. Microsoft should come to agreement with it.