
I'd like to suggest a feature. In most RPGs, the GM can decide how the dice come up when necessary. This is an advantage of a shield - or a source of endless humor in Paranoia. If the players aren't having fun because the dice gods have anticlimactically killed two party members, the GM in many games will intervene not by heavy-handed miracle, but by letting the bad guys have a few doses of "bad luck" themselves.
Now, I'm not wading into the argument about what you should or should not do in your games. What I am saying is that it seems like an insanely useful and simple tool. The GM can specify that the dice on a roll comes up a certain number - either "Player X's next roll" or the GM's roll. The players only see the "roll" and not the manipulation. This allows the GM to subtly adjust encounters on the fly if the RNG has come up with some wonky results. For example, if the low-level encounter against some flunky orcs has had the orcs roll 3 crits, you might be grateful for the option to have the orcs "publicly" roll a few bad rolls rather than derailing your entire campaign thanks to some bad luck. Or maybe you'd rather let the dice fall where they may. I'm just saying it would be a nice option. Maybe you want to be sure the players do notice that musty old book at the back of the library at Miskatonic U - especially since they critically botched their questioning of the police chief. Etc, we could come up with examples all day where GM control of the random element would be helpful.
Thoughts?