A couple of things I would like to see...
A better way to get media into Urho. There is no real way to get game-ready model formats into Urho from the distro. I suggest using AssImp (http://www.assimp.org/ ) and create a custom importer-exporter.
If you want to use the demos you have to rip them out from the current monolithic mega demo menu project their currently structured within. This may seem trivial but when I just wanted a "Hello World" start I had to rip the hello world demo and patch in my own C# project code, for setting up Urho and initialising it, with its own resources. Really a noob just want to compile a "hello world" project and then see how its done, simple.
You need a 3D editor Again for a noob this is a pain as you need to go and compile your own version from the Urho main source branch on another site. Alternatively, these tools would be a great start for a C# opensourced level editor, https://github.com/SonyWWS IMHO