I'll admit that with a triple-monitor setup, I've sometimes wanted to remote in with only a dual-screen setup. So it wasn't perfect for me. It certainly did fine for my 95% use-cases. Having to reconnect to adjust desktop size just was never a big deal for me.
Maybe adjusting sizes is more of an issue for people today. If I was using a laptop and constantly docking/disconnecting external monitors with a large number of active connections, it'd annoy me to have to completely reconnect each time.
Anyway, I eventually switched for docker support, and used this powershell-based tool that converts VMWare workstation VMs to Hyper-V VMs - https://www.microsoft.com/en-us/download/details.aspx?id=424...
But maybe it’ll work with 1809, who knows. Don’t have it yet.