The option already exists. Click the dice while it's rolling and it will instantly display the final result.
Clicking the die usually results in a bug for me where the result shown isn't the one taken into account by the game. I end up not using that feature out of superstition because it feels like getting swindled when then 18 onscreen results in a failure.
I agree with the OP that the process takes too long. Two suggestions (made elsewhere before): shorten the time during which the die rolls; stop adding bonuses one by one if the DC is already met.
