what are you babbling about?
My all-time favorite shows: Nikita, Spartacus, Banshee

Yes, and it worked so well. Just like the concept of "half-metahuman" (Its like being a mutant. You are one or you aren't. There is no half). So well that the show went on to have ten seasons and a HUGE fan base. Oh, wait No

It's TV, it's a visual medium. The actual age of the actors is irrelevant. It's whether they work in the part they're playing. There have been many shows where the age between the actors playing parent and child have been rather close. Like the Cosby show, the mother and the oldest daughter. Only ten years difference.