Feature Description: Make commands issued via Rcon behave like they were entered via the console. Currently, if you issue a command like radiusrender via Rcon you will get the message that the render started, but status updates seem to go nowhere

What if you use the syntax as if you were on console, like add the world and map?

This is default minecraft server behavior and isn't Dynmap specific.

There's no way to implement this within the bounds of the RCON protocol