Demand they explain to you what your nominal value to the company is and also what your home-run value is. Then structure the base pay at the nominal and find a

Demand they explain to you what your nominal value to the company is and also what your home-run value is. Then structure the base pay at the nominal and find an incentive scheme to scale up to the home run. Ask them to propose the structure, then ask questions about everything you don't understand. It things get testy, that's probably a bad sign. Finally, if you're not confident what they're saying is valid, take a couple of days and get good advice.