1. Eliminate the Sim requirements.
2. Keep 1500
3. Require a minimum combined experience in the cockpit (say, 5000 hours)
4. Require maximum total combined age at the controls (say, 120 years).

The pilots of 3407 didn't even have a combined 1000 hours experience in the Q400. The above, combined with the new 1000 PIC requirements, should be enough.