Do you want failure sequences?
If you want real life IFR malfs that you want to run through in the sim?
This one happened. Night, IMC, icing, AFCS fully coupled. Then all the pitot/static heat failed at once. A short while later the IAS dropped to zero and the AFCS decided to try to get its speed back by suddenly pitching nose down. From fully coupled calm to UA in a few seconds.