I've seen suggestions and modifications for using 2d10 and even 3d6 in place of the 1d20. Part of the suggestion for using 2d10 is that you increase "auto failure" to a natural roll of "2" or "3" and "auto success" to a natural roll of "19" or "20". This at least gives you a 3% chance of criticals on either end of the spectrum. Obviously, this changes up critical threat ranges for weapons, so you have to decide how you want to handle that.
They also suggest that high DCs need to be shifted down slightly as your dice probabilities will be more heavily weighted toward results of "10" and "11".
Using 2d10 will produce a more consistent "average" which, in turn, means it will be easier to predict how your PCs will fair against challenges of a certain DC. In the end it just means that extremely high and low rolls will be much more rare which means difficulties need to be shifted closer to the "median" values to keep them relevant and still achievable.
HARRY DRESDEN — WIZARD
Lost items found. Paranormal Investigations.
Consulting. Advice. Reasonable Rates.
No Love Potions, Endless Purses, or Other Entertainment.