Absolutely! That does keep some of the checks. You can do better than that though!

It's like on the Apollo missions where some parts were made by two completely different manufacturers and worked completely differently.

Hybrid political systems are best. Of course if we like democracy (and most people do), then that should be the most common kind of component. But I'd still like to have some different paradigms mixed into the system. And that's exactly what most modern constitutions do, for better or for worse.