So, it looks like there are still some complicated rolls that we can't replicate. Not a bad thing as the dice system is pretty complex and handles many, many things as it is.
It would be nice, though, if I could run math operations inside the chat window.
Here's an example where it would be helpful: So, in D&D Next, you sometimes roll 2d20, pick the highest, and then add your modifiers. I don't think I can do that as it currently stands (roll 2 dice and have it only take the highest number).
I would
/roll d20
/roll d20
Select the best number. Let's say the best number is 17.
Then, if I could run this math in the chat window:
/add 17 + 4 + 3
Where 4 and 3 are different modifiers.
I could do this in my head and then announce it to the players, but I also think having a record of it in the chat log would be nice -- and there would be fewer mistakes.