This is an excellent product for playing pen and paper roleplaying games over the internet. The only thing that's missing is the ability to roll dice. I hope you would consider adding some simple dice with different numbers of sides, like four-sided dice up to twenty-sided dice.
Here's what I prefer to use currently, in case you would like to see what an implementation could look like (and this one is close to ideal to my mind): http://a.teall.info/mdice/
Having to switch back and forth between realtimeboard and dice makes playing roleplaying games a bit awkward. Some very simple dice in realtimeboard would make things so much smoother!
It could be as simple as a chat bot, responding to a command like "!2d6+3" with a random result of two six-sided dice plus three.