There was one feature in Microsoft's Remote Desktop Connection Manager that I really liked and would love to see in Royal TS. When adding a new RDP connection, there was an option to have it generate a range of server names.
For example, you just had to type SERVER## and give it a range of numbers like 1 to 10, and it would create 10 connections with SERVER01 through SERVER10. (see the attached screenshots)
This was a really fast way to create a long list of new sequential connections, instead of having to paste in a list. I've played around with the Royal TS PowerShell module and could do something similar, but it would be great to have it built in to the GUI to create a simple range.